add ci tests

.github/workflows/ci.yml

@@ -0,0 +1,24 @@
+name: CI
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Setup Repo
+        uses: actions/checkout@v3
+
+      - name: Setup Deno
+        uses: denoland/setup-deno@v2
+
+      - name: Test
+        run: deno task test