feat: add GitHub Actions workflow for releasing Obsidian plugin

.github/workflows/release.yml

@@ -0,0 +1,45 @@
+name: Release Obsidian Plugin
+
+on:
+  push:
+    tags:
+      - "[0-9]+.[0-9]+.[0-9]+"
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+          cache: "npm"
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build plugin
+        run: npm run build
+
+      - name: Get version from tag
+        id: version
+        run: echo "version=${GITHUB_REF_NAME}" >> $GITHUB_OUTPUT
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: ${{ steps.version.outputs.version }}
+          name: ${{ steps.version.outputs.version }}
+          draft: false
+          prerelease: false
+          files: |
+            main.js
+            manifest.json
+            styles.css