Improve documentation about how to add a custom Socialite provider

[Chi Bao]

What problem does this feature request solve?.

• Although I have tried to read the documentation and go through Github Issues and PRs, all I could find is instructions about how to create a login button for a custom provider.
• So far, I've added the provider's name to the configuration array, added custom icons, and modified the socialsteam.blade.php and connected-account.blade.php file to display the new provider. 

Describe your proposed solution

• I think that the documentation should show instructions on how to implement them properly, e.g., by publishing the Providers.php file to extend it.

Describe alternatives you've considered
N/A

Environment context

• Socialstream version: 3.8
• Jetstream stack: Livewire
• Laravel version: 9.0
• PHP version: 8.1.8

[Joel Butcher]

publishing the Providers.php file to extend it.

You don’t need to publish this file to be able to extend it. Please can you resubmit this to joelbutcher/socialstream-docs and outline the specific steps you propose should be documented.

Thanks