Enhance test case Q1

[G-N555]

Is your feature request related to a problem? Please describe.

So far we tests for cli command, but there are some tests missing to make sure whether boiler plate is properly generated. https://github.com/monstar-lab-oss/ml-frontend/blob/main/packages/start-frontend/__tests__/cli.test.ts

e.g.

• check if generated boilerplate contains correct folders inside
• check if generated boilerplate contains correct files inside correct directory

Describe the solution you'd like

We should create another tests that check if boiler plate is properly generated and contains certain directories and files inside.

[ptrkdan]

Depending on the outcome of #1190 , the current structure may significantly change, so it may be futile to work on the test cases right now. It may be best to postpone this until we have decided on code structure.

[jinmayamashita]

It seems that resolving the issue with #1255 should work for now.