[Development] Proposing Samuel Gaist for approver status

[André]

Hello all,

I'd like to propose Samuel as approver. He has been active in the Qt project for ages.

He not only provides code changes [0], he is also active reviewing others changes [1].

But that's not all: Samuel is *extremly* active in the Qt Forum [2], where he works
as moderator and answers plenty of questions every day.

Some of his patches arised from forum questions, therefore Samuel perfectly bridges 
between the end users and the Qt main developers.

I think this all qualifies Samuel for the approver status.

Best regards,
André

[0] https://codereview.qt-project.org/#/q/owner:%22Samuel+Gaist+%253Csamuel.gaist%2540idiap.ch%253E%22,n,z
[1] https://codereview.qt-project.org/#/q/reviewer:%22Samuel+Gaist+%253Csamuel.gaist%2540idiap.ch%253E%22,n,z
[2] https://forum.qt.io/user/sgaist