Create testing framework for CLI (#453)

* Create testing framework for CLI

- Need to add tsconfig for specs to convert module format and add spec
dir to output
- Use jasmine-ts to test

expected dev cycle would be to have two watchers, one for jslib
and one for CLI tests. We could add jslib tests to this jasmine config,
but it feels wrong to test a submodule

* Run prettier

* Add tests to build pipeline

* Include required package

* Add placeholder test

* Run prettier

* Add nodemon and fix watch

.github/workflows/build.yml

@@ -132,6 +132,9 @@ jobs:
       - name: Run linter
         run: npm run lint
 
+      - name: Run tests
+        run: npm run test
+
       - name: Build & Package
         run: npm run dist