Änderungen

Reforged updated (#958)
* w3libs update (better handling of wc3 installations, both reforged and
for backwards compat)
* refactoring W3utils (no longer static; should be easier to reason
about)
* removed dependency on shell-exec for git (wasn't working for me in
vscode so I rewrote to use jgit)
* some cleanup (dead code, commented-out code, 120-column line limit
* reworked some key workflows to use Optional instead of @nullable and
@NotNulll
 Co-authored-by: Cokemonkey11 <[email protected]>
 (commit: e66fa8a)