Add maintainer approval check

Signed-off-by: Peter Nied <[email protected]>

.github/workflows/maintainer-approved.yml

@@ -0,0 +1,35 @@
+name: Check if maintainers have approved this PR
+
+on:
+  pull_request_review:
+    types: [submitted]
+
+  pull_request_target:
+    types: [opened, reopened]
+
+jobs:
+  maintainer-approved-check:
+    runs-on: ubuntu-latest
+    steps:
+      - id: find-maintainers
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          result-encoding: string
+          script: |
+            const maintainersList = await github.request('GET /repos/{owner}/{repo}/collaborators', {
+                owner: 'peternied',
+                repo: 'OpenSearch-1',
+                permission: 'maintain',
+                affiliation: 'all',
+                per_page: 100
+            });
+
+            console.log(JSON.stringify(maintainersList));
+            return "a, b, c"
+
+      - uses: peternied/approved-by-maintainers@main
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          min-required: 1
+          maintainers: ${{ steps.find-maintainers.outputs.result }}