feat/forge bin as lib

[0xgregthedev]

convert forge/bin to a lib to export code for reuse

[Qwuke]

Looks good! We should probably add an explanation in the forge/Cargo.toml explaining why the binary is commented out, but I think it's fine to merge as is.

[odyslam]

Why do we need the bin source files?

[0xgregthedev]

Why do we need the bin source files?

This allows us to utilize our fork for the FilterArgs struct that is used when setting up the runner, instead of yoinking the code.
It will also allow us to potentially do the same with TestArgs and InstallArgs, making those features much easier to implement.