WIP Set up CI

.gitea/workflows/test_and_lint.yml

@@ -0,0 +1,18 @@
+name: Test and lint
+on:
+  push:
+jobs:
+  test_and_lint:
+    name: Test and lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v4
+      - name: Install Deno
+        uses: denoland/setup-deno@v2
+        with:
+          deno-version: v2.1.x
+      - name: Run test suite
+        run: "deno task test"
+      - name: Run linter
+        run: "deno lint"