Initial: Go app with tests + CI workflow

.gitea/workflows/ci.yaml

@@ -0,0 +1,27 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.21'
+
+      - name: Run tests
+        run: go test -v ./...
+
+      - name: Build
+        run: go build -o ci-test .
+
+      - name: Run binary
+        run: ./ci-test