Our Breakpoint class should reset all stop caches

[disconnect3d]

Essentially what I wrote here #1799 (comment) - instead of clearing only registers cache, we should clear all caches that were registered to be cleared by the 'stop' event in our Breakpoint class:

pwndbg/pwndbg/gdblib/bpoint.py

Lines 6 to 26 in cb053dd

	class Breakpoint(gdb.Breakpoint):
	"""
	Breakpoint class, similar to gdb.Breakpoint, but clears the caches
	associated with the stop event before determining whether it should stop the
	inferior or not.
	Unlike gdb.Breakpoint, users of this class should override `should_stop()`,
	instead of `stop()`, as the latter is used to do cache invalidation.
	"""
	def stop(self):
	# Clear the cache for the stop event.
	pwndbg.gdblib.regs.__getattr__.cache.clear()
	return self.should_stop()
	def should_stop(self):
	"""
	This function is called whenever this breakpoint is hit in the code and
	its return value determines whether the inferior will be stopped.
	"""
	return True

This can be done with this code:

pwndbg.lib.cache._ALL_CACHE_UNTIL_EVENTS['stop'].clear()

but we should probably make a function for this instead of using the _... variable? :)