Description

In addition of #1274, this PR adds a new window rule parameter in case some window do not behave correctly under MoveMinimize or MoveOnly hiding behaviours, or if you want to be able to share specific windows but still have Unmap for other windows.

Type of change

• Development change (no change visible to user)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation only update (no change to the factual codebase)
• This change requires a documentation update

Updated user documentation:

• hiding_strategy When specified, will force the window to hide in a certain way. See window_hiding_strategy for values.

Checklist:

• Ran make test locally with no errors or warnings reported
  Note: To fully reproduce CI checks, you will need to run make test-full-nix. Usually, this is not necessary.
• Manual page has been updated accordingly
• Wiki pages have been updated accordingly (to perform after merge)