Convert helm-charts-observability to regular directory

helm-charts-observability/.github/CODEOWNERS

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+# This should match the owning team set up in https://github.com/orgs/opensearch-project/teams
+*  @TheAlgo @DandyDeveloper @peterzhuamazon @prudhvigodithi @gaiksaya

helm-charts-observability/.github/ISSUE_TEMPLATE/bug_template.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: "[BUG][Chart Name]"
+labels: 'bug, untriaged'
+assignees: ''
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Chart Name**
+Specify the Chart which is affected?
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Host/Environment (please complete the following information):**
+ - Helm Version: [e.g. 3.x.x]
+ - Kubernetes Version: [e.g. 1.16.x]
+
+**Additional context**
+Add any other context about the problem here.
+

helm-charts-observability/.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: '[Enhancement][Chart Name]'
+labels: 'enhancement, untriaged'
+assignees: ''
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.
+

helm-charts-observability/.github/PULL_REQUEST_TEMPLATE.md

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+### Description
+[Describe what this change achieves.]
+ 
+### Issues Resolved
+[List any issues this PR will resolve. You should likely open an issue if one does not already exist.]
+ 
+### Check List
+- [ ] Commits are signed per the DCO using --signoff
+
+For any changes to files within Helm chart directories:
+- [ ] Helm chart version bumped
+- [ ] Helm chart `CHANGELOG.md` updated to reflect change
+
+By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
+For more information on following Developer Certificate of Origin and signing off your commits, please check [here](https://github.com/opensearch-project/helm-charts/blob/main/CONTRIBUTING.md#developer-certificate-of-origin).

helm-charts-observability/.github/workflows/add-untriaged.yml

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+name: Apply 'untriaged' label during issue lifecycle
+
+on:
+  issues:
+    types: [opened, reopened, transferred]
+
+permissions:
+  issues: write
+
+jobs:
+  apply-label:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3
+        with:
+          script: |
+            github.rest.issues.addLabels({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              labels: ['untriaged']
+            })

helm-charts-observability/.github/workflows/github-merit-badger.yml

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+---
+name: github-merit-badger
+on:
+  pull_request_target:
+    types:
+      - opened
+
+jobs:
+  call-action:
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+    steps:
+      - uses: aws-github-ops/github-merit-badger@949750c3f54985fad4715e77f88942be7547f1bc # v0.0.98
+        id: merit-badger
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          badges: '[first-time-contributor,repeat-contributor,valued-contributor,seasoned-contributor,all-star-contributor,distinguished-contributor]'
+          thresholds: '[0,3,6,13,25,50]'
+          badge-type: 'achievement'
+          ignore-usernames: '[opensearch-ci-bot]'

helm-charts-observability/.github/workflows/lint-test.yaml

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+# See https://github.com/helm/chart-testing-action
+name: Lint and Test Charts
+
+on: [pull_request, workflow_dispatch]
+
+jobs:
+  lint-test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        k8s: ["1.19.16", "1.21.14", "1.22.9", "1.23.12", "1.24.7", "1.25.2"]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          fetch-depth: 0
+          persist-credentials: false
+
+      - name: Install Helm
+        uses: azure/setup-helm@18bc76811624f360dbd7f18c2d4ecb32c7b87bab # v1.1 # TODO: update version
+        with:
+          version: v3.7.0
+
+      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6
+        with:
+          python-version: '3.8'
+
+      - name: Install chart-testing
+        uses: helm/chart-testing-action@5f16c27cf7a4fa9c776ff73734df3909b2b65127 # v2.1.0
+
+      - name: Run chart-testing (list-changed)
+        id: list-changed
+        run: |
+          changed=$(ct list-changed --config ct.yaml)
+          if [[ -n "$changed" ]]; then
+            echo "CHART_CHANGED=true" >> $GITHUB_ENV
+          fi
+
+      - name: Run chart-testing (lint)
+        run: ct lint --config ct.yaml
+
+      - name: Create kind cluster
+        uses: helm/kind-action@9e8295d178de23cbfbd8fa16cf844eec1d773a07 # v1.4.0
+        with:
+          node_image: kindest/node:v${{ matrix.k8s }}
+          kubectl_version: v${{ matrix.k8s }}
+        if: ${{ env.CHART_CHANGED == 'true' }}
+
+      # See https://github.com/helm/chart-testing/blob/main/doc/ct_install.md
+      - name: Run chart-testing (install)
+        run: ct install --config ct.yaml --debug

helm-charts-observability/.github/workflows/release.yaml

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+name: Release Charts
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+
+jobs:
+  release:
+    permissions:
+      contents: write
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          fetch-depth: 0
+          persist-credentials: false
+
+      - name: Configure the Git and CR binaries
+        run: |
+          git config user.name "$GITHUB_ACTOR"
+          git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
+          echo "Download custom cr patched binary to support immutable release"
+          mkdir ./cr-patched
+          curl -SfL https://ci.opensearch.org/ci/dbc/tools/cr-587-immutable -o ./cr-patched/cr
+          chmod 755 ./cr-patched/cr
+
+      - name: Install Helm
+        uses: azure/setup-helm@18bc76811624f360dbd7f18c2d4ecb32c7b87bab # v1.1 # TODO: update version
+        with:
+          version: v3.7.0
+
+      # See https://github.com/helm/chart-releaser
+      # See https://github.com/helm/chart-releaser-action
+      - name: Run chart-releaser
+        uses: helm/chart-releaser-action@a917fd15b20e8b64b94d9158ad54cd6345335584 # v1.6.0
+        with:
+          install_dir: ./cr-patched
+        env:
+          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"