allow to customize folder naming convention about generate-react-cli

[TyIsI]

I'm also interested in this for the purpose of templating component names.

Example:
generate-react component --type=provider Example creates a src/providers/ExampleProvider directory that would look like this:

src/providers/ExampleProvider
src/providers/ExampleProvider/Example.context.ts
src/providers/ExampleProvider/ExampleProvider.types.ts
src/providers/ExampleProvider/ExampleProvider.tsx
src/providers/ExampleProvider/ExampleProvider.test.tsx
src/providers/ExampleProvider/ExampleProvider.stories.tsx

Example.context.ts could look like this:

import { createContext } from 'react'

import { type ExampleContextType } from './ExampleProvider.types'

export const defaultExampleContext: ExampleContextType = {}

export const ExampleContext = createContext(defaultExampleContext)

Disclaimer: Yes, it could be argued that the containing directory could simply be called Example, but for the sake of flexibility I think it would be good to be able to use a template name for the target directory.

[TyIsI]

@bureyburey I opened #98 for this