feat: H7 support (#5738)

Co-authored-by: Richard Li <richard.li@ces.hk>
Co-authored-by: philmoz <phil.a.mitchell@gmail.com>
Co-authored-by: raphaelcoeffic <1050031+raphaelcoeffic@users.noreply.github.com>

radio/src/bitmaps/480x272/CMakeLists.txt

@@ -8,6 +8,8 @@ elseif(PCB STREQUAL PL18)
   set(BITMAP_TARGET_PREFIX pl18)
 elseif(PCB STREQUAL X12S)
   set(BITMAP_TARGET_PREFIX x12s)
+elseif(PCB STREQUAL STM32H7S78_DK)
+  set(BITMAP_TARGET_PREFIX h7rs)
 else()
   set(BITMAP_TARGET_PREFIX x10)
 endif()