authorisation: warn over invalid permissions

[oliver-sanders]

If a user is granted a permission that doesn't exist we should log this prominently.

At present we do not detect this, the permission just has no effect. This is safe, but not especially helpful. Permissions can be invalid due to typos, but also due to changes in Cylc (so raising an error isn't appropriate).

[oliver-sanders]

Essentially add a validate step which checks the site and user configs:

cylc-uiserver/cylc/uiserver/authorise.py

Lines 169 to 170 in 89a62e2

	self.owner_auth_conf: dict = owner_auth_conf
	self.site_auth_config: dict = site_auth_conf

It would check the permissions referenced in the configs against the list of all valid permissions:

cylc-uiserver/cylc/uiserver/authorise.py

Lines 181 to 184 in 89a62e2

	@property
	def ALL_OPS(self) -> List[str]:
	"""ALL OPS constant, returns list of all mutations."""
	return get_list_of_mutations()

And all valid groups:

cylc-uiserver/cylc/uiserver/authorise.py

Lines 148 to 150 in 89a62e2

	READ = "READ"
	CONTROL = "CONTROL"
	ALL = "ALL"

If a config contains a permission that does not exist, raise a warning.

If a config contains a negated permission that does not exist (e.g. !stop means you do not have permission to stop), then it should raise an exception.

For more information on user/site configs, see the docs, note, for this ticket, we are only interested in the permissions lists (e.g. ['READ', 'play'], ['CONTROL', '!stop'], etc).