feat(API): Plugins status forwards & sbppchecker lib

[Rushaway]

Description

1. Fix library name conflict between sbpp_checker and sbpp_main (both were using "sourcebans++")
2. Added forwards for each plugins who have natives to push informations about their available status

Motivation and Context

1. We are verifying for LibraryExists with sourcebans++ for using sbpp checker natives, wich was always incorrect to due the same RegPluginLibrary as sbpp_main.
2. I run a lot of plugins, and to make a correct implementation I need to check multiples things related:

• LibraryExists on OnAllPluginsLoaded
• OnLibraryAdded/OnLibraryRemoved in case of late load (or plugin reload) example of code

This kind of stuff, needed, can lead to massive boolean check on map change (See more details).
We can avoid this by just sending the informations via a forward.

How Has This Been Tested?

Tested with a test plugin implementing all new forwards:

• Verified forward calls with PrintToServer
• Tested plugin reload and pause scenarios
• All forwards triggered as expected

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.

[Rushaway]

cc @Hackmastr @rumblefrog @maxime1907

[rumblefrog]

Is this ready for review, or still draft?

[Rushaway]

Draft. I need to edit it later today.