[REQ][typescript-fetch] Generate file names in kebab-case

[En0s0und]

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

Hello, we would like to be able to generate file names in kebab-case with the typescript-fetch generator.

Describe the solution you'd like

An additional property "fileNaming" has been added to typescript-angular and typescript-nestjs generators, see that PR.
It would be nice to have it for the typescript-fetch generator too.

Describe alternatives you've considered

none.

Additional context

#727