workflow: extract package version for release tag

.gitea/workflows/build.yml

@@ -1,6 +1,9 @@
 name: Build
 on: [push]
 
+permissions:
+  contents: write
+
 jobs:
   build_arch:
     runs-on: archlinux
@@ -37,6 +40,10 @@ jobs:
         with:
           name: arch-package
           path: ./dist
+      - name: Create Git Tag
+        run: |
+          git tag ${{ needs.build_arch.steps.pkg_version.outputs.version }}
+          git push origin ${{ needs.build_arch.steps.pkg_version.outputs.version }}
       - name: Create Release and Upload Assets
         uses: https://github.com/softprops/action-gh-release@v1
         with: