Add meta option to disable return value on /set for cover_position_tilt

[burmistrzak]

Implements a lightly customized cover_position_tilt converter, that doesn't return the set value, because we already have reporting for currentPositionLiftPercentage configured.

Nothing more. 😊

Should help with itavero/homebridge-z2m#852 (comment)

[Koenkk]

that doesn't return the set value,

Does this cause any problems?

[burmistrzak]

that doesn't return the set value,

Does this cause any problems?

Not with the BMCT-SLZ, because the device starts reporting its new position immediately.
However, having the /set command itself return the destined target position instantly can cause a bunch of weird stuff downstream.

100
0    [target position from /set]
100
99
98
97
[...]

Very simple devices that don't provide additional details like e.g. motor_state might become a bit harder to integrate, because the direction of movement no longer can be determined from a single status update by utilizing this particular quirk.

[Koenkk]

Thanks!