Add additional unique ID suffix to v2 quirks

[TheJulianJES]

We should provide an optional kwarg for a unique ID "suffix suffix" to this:

zha/zha/application/platforms/__init__.py

Lines 353 to 356 in d7e6544

	if has_attribute_name:
	self._unique_id_suffix = entity_metadata.attribute_name
	elif has_command_name:
	self._unique_id_suffix = entity_metadata.command_name

Currently, v2 quirks can only add one entity (per platform) per attribute id. Otherwise, they silently fail to create at runtime due to duplicate IDs. This is an issue with buttons (writing different values) or (binary) sensors (parsing values differently).

We should validate quirks v2 metadata (in zha-quirks, zigpy, or zha?) to make sure there's an explicit warning about this.
If this happens, the conflicting quirk v2 entities should have a uid_suffix kwarg added. This would be an additional suffix to the attribute UID suffix already in ZHA.