Add some safety checks before deleting folders

[arielj]

Problem description

Currently some actions that we do delete a folder directly without checking its content, and if something bad happens we might delete something that we shouldn't.

Feature description

Before deleting a folder we should run some checks to ensure that the folder we are going to delete is correct, for example:

• before deleting a prefix folder we should check if the folder contains files like dosdevices drive_c, pfx/dosdevices or pfx/drive_c
• before deleting a game folder we should check if the folder contains some game file (we have some metadata about the game, I think we can check if the game executable is present)
• before deleting a wine version we could check that it has the expected folder lib lib64 share bin

I think it doesn't hurt to be extra careful when deleting stuff.

Alternatives

not sure

Additional information

No response

[therealmate]

Also, when deleting a prefix, it should delete the files that belong to the prefix, not the entire folder.

[arielj]

I think this would be partially solved by #3989