Use JWT token instead of cookie for managing auth

[davide-granello]

Solves #7 Added token boolean property to module options, to switch between sanctum cookie-based to jwt-based auth (a-là mobile app frontend). See laravel docs

With jwt mode:

• At login time, the plugin expects a json response from laravel backend containing the token generated (guide)
• Once token is received, it is saved in a cookie
• A global middleware that runs for every route obtains the cookie token and fetches again the user (if app store is empty, just like the standard mode)
• The token is added in the headers of every request made using apiFetch function (again, just like the standard mode)

Configuration and steps needed are in readme file.

[kreejzak]

Thank you 🙌