New feature lumaris rgb tunable white

[RBaragona]

Add support for a new LEAP light device type to enable control of Lumaris RGB + Tunable White.

[RBaragona]

@mdonoughe or @bdraco , anything you'd like to see in order to approve/merge this? I tested this with a HWQSX system.

[eclair4151]

You'll need to add some tests for sure, start by defining a new device/zone/etc inside the test response jsons:
https://github.com/gurumitts/pylutron-caseta/tree/dev/tests/responses/hwqsx

And then add tests in test_smartbridge to confirm the request and response and formatted as expected
https://github.com/gurumitts/pylutron-caseta/blob/dev/tests/test_smartbridge.py

See test_qsx_set_ketra_color for a similar example.

mdonoughe and bdraco, let me know if you want me to test as well, happy to throw a fake tunable RGB on my QSX system with lutron designer and confirm I can control it via the library.

[RBaragona]

@eclair4151 I'm not sure how to find the device class, but I also do not see it used, so do not believe this impacts function/testing.

[RBaragona]

@mdonoughe I believe I have addressed all of your comments. Please let me know if anything else is needed?

@eclair4151 , I have added tests as you suggested.

I believe this should be ready to merge.

[eclair4151]

Looks good to me. I don't have one of those devices to test, but I assume you tried it out on yours.
I also just raised a quick PR to add a new tilt device type for wood blinds, so hopefully we can get these both merged in, and then make a .23 release