Add TS0601 _TZE284_5m4nchbm RCBO quirk

[alvarogl]

Proposed change

Add support for the Tuya RCBO variant _TZE284_5m4nchbm / TS0601.

This PR adds a new v2 quirk entry in zhaquirks/tuya/ts0601_rcbo.py that maps the datapoints from a working Zigbee2MQTT converter, including the composite raw datapoints 48 and 49 used for the alarm/breaker threshold payloads. The implementation preserves the reserved bytes in those payloads when writing updated thresholds back to the device.

The PR also adds tests to verify:

• datapoint report parsing for the new variant
• serialized write payloads for normal enum writes and composite raw writes
• no regressions in quirks v2 registration

Additional information

This is additive only and should not be a breaking change.

The device diagnostics used for this work show the unsupported device before this quirk is applied:

• manufacturer: _TZE284_5m4nchbm
• model: TS0601
• power source: Mains
• device type: Router
• quirk_applied: false

Validation run locally:

• uv run pytest tests/test_tuya_rcbo.py -q
• uv run pytest tests/test_quirks_v2.py -q
• uv run pre-commit run --all-files

Device diagnostics

zha-01KKZ1NW5GS19MYYHNAPKR43FC-_TZE284_5m4nchbm TS0601-bb977f4b1014ef6e4cf4f7a3f15e139a.json

Checklist

• The changes are tested and work correctly
• pre-commit checks pass / the code has been formatted using Black
• Tests have been added to verify that the new code works
• Device diagnostics data has been attached

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.78%. Comparing base (c5634ab) to head (af6c946).

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #4835      +/-   ##
==========================================
+ Coverage   92.76%   92.78%   +0.02%     
==========================================
  Files         385      385              
  Lines       12818    12868      +50     
==========================================
+ Hits        11890    11940      +50     
  Misses        928      928              

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[TheJulianJES]

We also have methods, like tuya_dp, in the TuyaQuirkBuilder to both create the local attributes and the mappings. Is there a reason why you've done it like this instead?
For reference, see:

zha-device-handlers/zhaquirks/tuya/builder/__init__.py

Lines 641 to 671 in c5634ab

	def tuya_dp_attribute(
	self,
	dp_id: int,
	attribute_name: str,
	ep_attribute: str = TuyaMCUCluster.ep_attribute,
	converter: Callable[[Any], Any] | None = None,
	dp_converter: Callable[[Any], Any] | None = None,
	endpoint_id: int | None = None,
	dp_handler: str = "_dp_2_attr_update",
	type: type = t.uint16_t,
	access: foundation.ZCLAttributeAccess = foundation.ZCLAttributeAccess.NONE,
	is_manufacturer_specific=True,
	) -> Self:
	"""Add an Tuya DataPoint and corresponding AttributeDef."""
	self.tuya_attribute(
	dp_id=dp_id,
	attribute_name=attribute_name,
	type=type,
	access=access,
	is_manufacturer_specific=is_manufacturer_specific,
	)
	self.tuya_dp(
	dp_id=dp_id,
	ep_attribute=ep_attribute,
	attribute_name=attribute_name,
	dp_converter=dp_converter,
	converter=converter,
	endpoint_id=endpoint_id,
	dp_handler=dp_handler,
	)
	return self

and: https://github.com/zigpy/zha-device-handlers/blob/dev/tuya.md#tuya_dp_attribute.

[alvarogl]

Refactored this to use the v2 TuyaQuirkBuilder DP helpers instead of the hand-written AttributeDefs / dp_to_attribute block.

Concretely:

• single-DP entities now use tuya_switch, tuya_sensor, and tuya_enum
• the composite DP48/DP49 payloads now use tuya_attribute + tuya_dp_multi with the same reserved-byte-preserving write converters as before
• the custom TuyaRCBO2ManufCluster class is gone, so the manufacturer-cluster attributes/mappings are now declared the way tuya.md and the builder API recommend

I reran:

• uv run pytest tests/test_tuya_rcbo.py -q
• uv run pytest tests/test_quirks_v2.py -q
• uv run pre-commit run --files zhaquirks/tuya/ts0601_rcbo.py tests/test_tuya_rcbo.py

Thanks, that is a better fit for this v2 quirk.