Improve prompts and options

[mtaku3]

This may broaden use cases.
Including,

• 6eaa419 : fix issue showing project name instead of namespace when namespace prompt.
• de72777 :
  • Allow any string for project name and namespace. Microsoft recommends to use PascalCase for namespace. But this is not must-do and users should be allowed to use any string as they want.
  • Allow folder name different from project name. Folder name doesn't necessarily have to be the same with project name.
• 5a91523 :
  • fix not to singularize enum field. I think it should not be singularized. I removed that feature but can be optional.
• d0d18bf :
  • Make singularize and pluralize of collections' name and items' name optional. According to PocketBase documentation, there's no specification to use plural for collection's name. So I made it optional (prompts at first time to generate code).

[iluvadev]

Thanks a lot
Very good contributions! :)
I can't right now, but i will review it in a few hours

[iluvadev]

Hi, I reviewed de code.
I like so much. I made some changes, minor fixes.
Thanks!