feat: Lots of new useful features and fix

[PUDGE133]

Description

Describe the changes

• Several very useful extension methods.
• Additional overloads of the Get method for Door.
• Improving the Door.Get(GameObject) method
• Implementation of new properties for Firearm
• Created stubs for the Log class methods
• Added several new teleportation methods for the Player
• Server.PlayerCount now actually returns the number of players, not NPCs included.
• Implemented a new property Server.ReservedSlots
• And also a few minor corrections in the code and in the documentation for methods and properties

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)
• Documentations

Submission checklist

• I have checked the project can be compiled
• I have tested my changes and it worked as expected

Other

• Still requires more testing

[PUDGE133]

If you have any questions, you can write here or to me on Discord: scaletta2019