Docs for new team mates

Docs list:

1. https://docs.google.com/document/d/1uw9Dfui5ZepSrBpMc1DrxFOeRFnDu8ubzFse8Mr_s7E/edit?tab=t.0#heading=h.l2reo28si4bc
2. https://dev.epicgames.com/documentation/en-us/unreal-engine/programming-subsystems-in-unreal-engine
3. https://dev.epicgames.com/documentation/en-us/unreal-engine/function-specifiers?application_version=4.27
4. https://dev.epicgames.com/documentation/en-us/unreal-engine/epic-cplusplus-coding-standard-for-unreal-engine
5. https://dev.epicgames.com/community/learning/knowledge-base/GDD9/unreal-engine-modules-overview-and-structure
6. https://benui.ca/unreal/uclass/

Suggests areas of expertise or knowledge:

1. Architecture design and patterns
2. Representation of 3D models data in cpp
3. Slates
4. Garbage Collector and Reflection system (with UHT)
5. Smart pointers in UE
6. Modules (preprocessor) and subsystems (runtime)
7. Multithreading