ci: add Gitea Actions workflows and placeholder tests

.gitea/workflows/deploy-prod.yml

@@ -0,0 +1,21 @@
+name: Deploy Production
+
+on:
+  push:
+    branches: [main]
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: '1.22'
+
+      - name: Build
+        run: CGO_ENABLED=0 go build -o main ./cmd/api
+
+      - name: Deploy
+        run: echo "Production deploy via docker"