chore: add GitHub workflows, issue templates, and changelog

- Tests, Pint, Release, Changelog, Auto-merge, Deploy Docs workflows
- Bug report template, security policy, contributing guide
- Dependabot config for GitHub Actions
- Remove .idea from tracking
- Keep only premium packages in ecosystem section

.github/workflows/release.yml

@@ -0,0 +1,51 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*.*.*'
+
+permissions:
+  contents: write
+
+jobs:
+  tests:
+    uses: ./.github/workflows/tests.yml
+    secrets: inherit
+
+  release:
+    needs: tests
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v6
+
+      - name: Determine if pre-release
+        id: prerelease
+        run: |
+          TAG="${{ github.ref_name }}"
+          if [[ "$TAG" == *"-"* ]]; then
+            echo "flag=--prerelease" >> $GITHUB_OUTPUT
+          else
+            echo "flag=" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Create GitHub Release
+        run: gh release create "${{ github.ref_name }}" --generate-notes ${{ steps.prerelease.outputs.flag }}
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  cleanup:
+    needs: tests
+    if: failure()
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v6
+
+      - name: Delete tag on test failure
+        run: git push --delete origin "${{ github.ref_name }}"