feat: error handling

[oskardotglobal]

All those .expects and nested match statements were bugging me, so I've written a custom error handler.

Basically, I've written 2 macros, which do the following:

• unwrap_or_panic! & unwrap_or_exit! - Unwrap either an Option or a Result. Log the error of the result if it exists + further context with format! syntax support
• error! & error_from! - Construct a WinappsError from an existing error and / or a message. This is mostly used to return values from functions, but you can still call panic and exit on it for the functionality of the 2 macros above

I've also documented all of them and all the structs, enums and traits I used.
This also includes the commits from #26, so that has to be merged first.

[oskardotglobal]

This is ready for review now with #26 being merged

[LDprg]

@oskardotglobal seems like something messed up with your repo, because it for example readds the quickemu installer script.

[oskardotglobal]

Yeah, gotta merge first

[oskardotglobal]

Ok, this is fully up-to-date now.

[LDprg]

Some minor code parts did get lost, otherwise great work.

[oskardotglobal]

Ok I've made some more changes; I've fully removed the unwrap_or_exit and unwrap_or_panic functions because them having the same name as the macros was kind of stupid because the IDE would automatically import those instead of the macros
I've replaced them with the into_error macro which just wraps the result in a function that does some type magic and returns a Result<T, WinappsError>. I've also documented all my changed

[LDprg]

Almost finished.

[oskardotglobal]

there we go

[LDprg]

This is now ready.