[v2] Improve type definitions

[mark-wiemer]

Is your issue related to a problem? Please describe. The current AHK v2 type definitions are lacking and don't describe everything I want to know

Describe the solution you'd like I want more information about each function so I can learn AHK v2 faster

Describe alternatives you've considered @GroggyOtter has a great type definition file that we can incorporate into AHK++

Additional context

• https://github.com/GroggyOtter/ahkv2_definition_rewrite/issues/8