* use RLE encodes bitmaps on 212x64 pixel radios
* fix model image display
fix icon display
* implement RLE bitmaps in companion for splash image on 212x64 radios
reserve 3kB for RLE bitmaps in firmware
* fix size check
* use defines instead of magic numbers
* fix display of splash screens on 212x64 radios
* add warning message if compressed image is larger than the reserved space