fw/b: Add support for runtime toggle of navbar

Co-authored-by: Adnan Begovic <adnan@cyngn.com>
Co-authored-by: jhenrique09 <jhenrique09.mcz@hotmail.com>
Co-authored-by: LuK1337 <priv.luk@gmail.com>
Co-authored-by: Paul Keith <javelinanddart@gmail.com>
Co-authored-by: Timo Wendt <timo@tjwendt.de>
Change-Id: I4a6d3f89bc171c3921875b24c077cb78c03517ad