[Feature]: Engine organization

[ZotyDev]

Discord Username

No response

Enhancement Type

Feature

Request

The engine itself is a huge mess, there is almost no organization, we need to sort things out and improve the code's general structure, moving parts to specific areas and creating new files to handle different topics.
Here is a list of what needs to be done:

• Modularize all the building blocks of the engine
• Remove unused code
• Create a common module for the engine
• Separate client-specific from server-specific
• Ask clippy to yell at us and blindly do everything it says