Add Gitea action for testing

.gitea/workflows/test.yaml

@@ -0,0 +1,19 @@
+name: Test API
+
+on:
+  push:
+    branches:
+      - "master"
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup .NET 8.0
+        uses: actions/setup-dotnet@v3
+        with:
+          dotnet-version: '8.0'
+      - name: Test
+        run: dotnet test