fix: Add complete Request class methods to prevent Intelephense conflicts

[Amirhf1]

This PR fixes the issue with Intelephense extension in VS Code by adding complete request class methods to the generated stubs.

Changes:

• Added new config option include_complete_request_stubs (default: true)
• Added complete list of Request class methods with proper return types
• Modified Generator class to handle Request class specially

Fixes #1693

[erikn69]

I think it can be improved, making it more configurable, like a list of the classes that will be completely mapped, and making it automatic, so you don't have to manually define the methods.