GameController iOS 15.0 Beta 4 to Beta 5 API Differences

GCInputNames.h
Added GCInputButtonShare
GCMicroGamepad.h
Added GCInputMicroGamepadButtonMenu
GCPhysicalInputProfile.h
Added GCPhysicalInputProfile.hasRemappedElements
Added -[GCPhysicalInputProfile mappedElementAliasForPhysicalInputName:]
Added -[GCPhysicalInputProfile mappedPhysicalInputNamesForElementAlias:]
GCXboxGamepad.h
Added GCXboxGamepad.buttonShare