Merge branch 'feature/watchpoint_on_stack_canary' into 'master'

Add option to automatically set a watchpoint at the end of the swapped-in task

This should make stack overflows easier to debug because it triggers a debug exception as soon as the stack is overwritten, not later when a context switch happens. Marked as a FreeRTOS debug feature because it doesn't give a nice error message and uses up a watchpoint.

See merge request !389