This merge request brings a fix to the tab bar on iPadOS with:
The addition of a BottomTabBarController class that overrides the UITabBarController one and displays
the previous tab bar layout at the bottom of the screen.
The edit tool bar's bottom constraint that is now aligned to the safe area
in order to avoid any visual glitch and remove the Xcode generated warning
forcing the change.
The margins and bottom constraint of the current view controller that are
adjusted in order to properly be able to fix the mini player if needed.
These changes only apply to iPads running with iPadOS 18.0 and versions
above it.
