feat: add testability for DriveInfo

[FantasyTeddy]

Fixes #826

This adds the possibility to add drives to the MockFileSystem together with a MockDriveData that can be used to configure the various properties of the drive (free space, type, etc.).

[vbreuss]

Thanks a lot @FantasyTeddy.
The overall implementation looks quite neat; I have only a few minor comments.

[vbreuss]

to configure how the drive should behave (free space, type, etc.).

Just to clarify: You did not implement any behaviour of the mocked drive, right?

I mean, you can now mock the DriveInfo by providing explicit values, but they don't affect the other functionality in the MockFileSystem (e.g. adjusting the AvailableFreeSpace when adding or deleting files, or manipulating file streams).

[FantasyTeddy]

to configure how the drive should behave (free space, type, etc.).

Just to clarify: You did not implement any behaviour of the mocked drive, right?

I mean, you can now mock the DriveInfo by providing explicit values, but they don't affect the other functionality in the MockFileSystem (e.g. adjusting the AvailableFreeSpace when adding or deleting files, or manipulating file streams).

You are correct of course. I changed my wording to hopefully prevent confusion.

[github-actions]

This is addressed in release v20.0.28.