workflows: Add release workflow

.gitea/workflows/release.yaml

@@ -0,0 +1,23 @@
+name: Release and publish
+run-name: Release from ${{ gitea.actor }} 🚀
+on:
+  workflow_run:
+    workflows: ["Build artifact"]
+    #branches: [main]
+    types: 
+      - completed
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/download-artifact@v2
+      with:
+        name: InnkeeperBot
+    - name: Use Go Action  
+      id: use-go-action
+      uses: https://gitea.com/actions/release-action@main
+      with:
+        files: |-
+          InnkeeperBot            
+        api_key: '${{secrets.RELEASE_TOKEN}}'