Add option to generator to output JavaScript instead of TypeScript

[bennypowers]

The generator currently outputs TypeScript projects only. It should have an option to output JavaScript projects.

This could be accomplished without duplicating code by the following steps

1. If the TypeScript option is selected, continue as normal
2. If the JavaScript option is selected, run all the same steps as the TypeScript generator, but add the following steps afterwards:
   1. Run esbuild or TSC on the outputted TypeScript sources (minify: false)
   2. If necessary, run eslint --fix to align with linting standards
   3. Delete the generated TypeScript sources.

The generator should detect if the user is trying to add a JS component to a TS project and vice-versa, and either error out or warn.

Bonus points to adding unit and integration tests to the generator.

[shikhar13012001]

I want to work on this issue can you please assign this to me @bennypowers ?

[bennypowers]

go ahead submit the PR, i'll review