Fix github action paths / parameters

[Ivorforce]

This does several things:

• It actually publishes / fixes the parameters, intended for different folder setups of the project.
• godot-cpp is actually built now, as intended by the action author.
  • I'm not sure if we even need to, given that the latter command builds it fine. But that's for another PR to decide.
• It fixes scons caches, making builds a lot faster (I tested this; repeated builds now fly by very fast).
• It fixes a build error on windows when compiling with doc data.

[adamscott]

Seems ok. I would though rename everything to be consistent, i.e. using directory instead of folder.

[Ivorforce]

Ok, I renamed all the parameters to be consistent in naming scheme (except scons-cache, which corresponds to a parameter of the same name from godot itself).

[paddy-exe]

Thanks!