Compile vpkg with V 0.2.2 (a761f68)

[torbencarstens]

This PR is based on #36 from islonely.

Successfully compiled with a761f68 (see CI pipeline)

Some small comments on changes I did:

os.exec -> os.execute

os.exec has been renamed to os.execute and returns an os.Result now instead of an optional.
u/islonely changed returns from the functions with os.exec, I've ignored them in this update. This should definitely be checked though. All functions which use os.execute should either return an os.Result or some other indication, e.g. return a tuple of (int, string) where int = os.Result.exit_code.

Returning ? from functions

A proper error should be returned so that the user can be shown that one. Each layer should probably add to the error message before propagating it (depending on the path).

Remove tests from CI

I can't access the old CI logs and can't imagine how this should work without tests.