Add in deno type check and deno task test script (#14)

Author: hello-ashleyintech

.github/workflows/deno.yml

@@ -27,4 +27,7 @@ jobs:
         run: deno lint
 
       - name: Run tests
-        run: deno test --allow-none
+        run: deno task test
+
+      - name: Run type check
+        run: deno check *.ts && deno check **/*.ts

deno.jsonc

@@ -1,3 +1,6 @@
 {
-  "importMap": "import_map.json"
+  "importMap": "import_map.json",
+  "tasks": {
+    "test": "deno fmt --check && deno lint && deno test --allow-read --allow-none"
+  }
 }