Added README and release workflow for versioning

.gitea/workflows/release.yml

@@ -0,0 +1,56 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - "v*.*.*"
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Build changelog
+        id: changelog
+        shell: bash
+        run: |
+          git fetch --tags --force
+          current_tag="${GITEA_REF_NAME}"
+          previous_tag="$(git tag --sort=-creatordate | grep -v "^${current_tag}$" | head -n 1)"
+          if [ -n "$previous_tag" ]; then
+            range="${previous_tag}..${current_tag}"
+            header="Changes since ${previous_tag}"
+          else
+            range="${current_tag}"
+            header="Initial release"
+          fi
+          {
+            echo "notes<<EOF"
+            echo "## ${header}"
+            git log "${range}" --pretty=format:"- %s (%h)" --no-merges
+            echo
+            echo "EOF"
+          } >> "$GITEA_OUTPUT"
+
+      - name: Package extension
+        shell: bash
+        run: |
+          mkdir -p dist
+          zip -r "dist/json-content-formatter-${GITEA_REF_NAME}.zip" \
+            . \
+            -x ".git/*" \
+            -x ".gitea/*" \
+            -x "dist/*"
+
+      - name: Create release
+        uses: softprops/action-gh-release@v2
+        with:
+          body: ${{ steps.changelog.outputs.notes }}
+          files: dist/json-content-formatter-${{ gitea.ref_name }}.zip