Add assets command group for result manifests

packages/cli/e2e/__tests__/help.spec.ts

@@ -56,6 +56,7 @@ describe('help', () => {
   account          View and manage your Checkly account.
   alert-channels   List and inspect alert channels in your Checkly account.
   api              Make an authenticated HTTP request to the Checkly API.
+  assets           List and download result assets.
   checks           List and inspect checks in your Checkly account.
   destroy          Destroy your project with all its related resources.
   env              Manage Checkly environment variables.

packages/cli/package.json

@@ -74,6 +74,9 @@
       "alert-channels": {
         "description": "List and inspect alert channels in your Checkly account."
       },
+      "assets": {
+        "description": "List and download result assets."
+      },
       "checks": {
         "description": "List and inspect checks in your Checkly account."
       },