add maintainer tobiasbp (#34372)

This PR adds me as a _maintainer_ as suggested by @techknowlogick. 

A couple of my recent PRs:
* #34324
* #34323

Author: tobiasbp

MAINTAINERS

@@ -64,3 +64,4 @@ Rowan Bohde <rowan.bohde@gmail.com> (@bohde)
 hiifong <i@hiif.ong> (@hiifong)
 metiftikci <metiftikci@hotmail.com> (@metiftikci)
 Christopher Homberger <christopher.homberger@web.de> (@ChristopherHX)
+Tobias Balle-Petersen <tobiasbp@gmail.com> (@tobiasbp)