[Development] Proposing to move deploy tools to qtbase

[Ulf Hermann]

> I’m working on adding new CMake APIs for install support for Qt 6.3. As 
> part of that, there will be conveniences for invoking the appropriate 
> xxxdeployqt tool where available. At the moment, macdeployqt and 
> windeployqt live in qttools, whereas androiddeployqt lives in qtbase. 
> I’d like to propose moving macdeployqt and windeployqt to qtbase as 
> well.

+1

Installation and deployment has to be part of the core functionality of 
Qt's build system, not some afterthought.