Implement precompiled headers to reduce comp time

[GabrielPedroza]

As title. I've tried looking around if this already existed but couldn't find anything. I'm sure there are a good amount of utils and core functionalities of rocks that don't need to go through the process of copy and pasting the header files content, fed to a compiler for AST, go through MLIR/IR if via LLVM Clang, etc.... It can just be compiled into a pch file and should lower comp time significantly.