Improve docs for debugging a charm

[sed-i]

Currently, we only have:

https://juju.is/docs/sdk/debug-a-charm

There should probably be dedicated tutorials/howtos for:

• set_breakpointhook
• how to set up vscode/pycharm for remote debugging

operator/ops/framework.py

Lines 658 to 659 in 6536f2a

	def set_breakpointhook(self) -> Optional[Any]:
	"""Hook into ``sys.breakpointhook`` so the builtin ``breakpoint()`` works as expected.

This issue is part of a cross-team effort (juju, jhack, ops, o11y) for improving debugging docs.