feat: add vscode config for prettier

[Yordan-Ramchev]

Description

If the user picks prettier, then suggest the prettier .vscode extension, and add the settings.

settings.json

{
  "editor.defaultFormatter": "esbenp.prettier-vscode",
  "editor.formatOnSave": true
}

extensions.json

{
  "recommendations": ["esbenp.prettier-vscode"]
}

Related Issue

re #302

Notes for Reviewers

1. Create template/config/prettier/.vscode:
   1.1. extensions.json
   1.2. settings.json
2. render('config/prettier') in index.ts
3. Remove logic from renderEslint.ts for esbenp.prettier-vscode, as it is now moved to a dedicated file (template/config/prettier/.vscode/extensions.json)

Screenshots

Generated project without prettier

Generated project with prettier

[cexbrayat]

Thanks for the PR!

I'm wondering something: what happens in vscode if the extension is not installed with this settings.json?

[Yordan-Ramchev]

When the user is missing vscode extension (this case is covered in extensions.json to prompt the user to install it), but even in the case that they refuse to install it — they will get this message if they are missing the formatter.

[cexbrayat]

That sounds acceptable I guess. Let's ping @sodatea to see what he thinks about it

[haoqunjiang]

Looks good. Thanks!