feat(client): add project_languages methode

[fe80]

Hello,

This feature add the support of languages endpoint of a specific project.

https://docs.gitlab.com/ee/api/projects.html#languages

[fe80]

The lint fail because the module have too many line, I need to split into a new module or would you like I ignore this rubocop check for this module ?

[NARKOZ]

The lint fail because the module have too many line, I need to split into a new module or would you like I ignore this rubocop check for this module ?

Please ignore it.

[Mohamadddddddddd]

Hi

[NARKOZ]

Thank you ❤️