Add deno workflow

.gitea/workflows/deno.yml

@@ -0,0 +1,33 @@
+name: Deno app build and testing
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  deno:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+
+    steps:
+      - name: Setup repo
+        uses: actions/checkout@v3
+
+      - name: Setup Deno
+        uses: denoland/setup-deno@v1
+        with:
+          deno-version: v1.x
+
+      - name: Verify formatting
+        run: deno fmt --check
+
+      - name: Run linter
+        run: deno lint
+
+      - name: Run tests
+        run: deno task test
+
+      - name: Run type check
+        run: deno check *.ts && deno check **/*.ts