Refactor handler to external

Moved task handler functions to external functions, signatures are in
tasks.h, each function has its own .c file in Src/tasks

STM32/CM7/CMakeLists.txt

@@ -62,6 +62,8 @@ target_sources(${CMAKE_PROJECT_NAME} PRIVATE
     Core/Src/ring_buffer.c
     Core/Src/SEGGER_RTT.c
     Core/Src/SEGGER_RTT_printf.c
+    Core/Src/tasks/crank.c
+    Core/Src/tasks/cam.c
 )
 
 # Link directories setup