Add OccupancySensing PIR delay entities

[TheJulianJES]

DRAFT. TODO: Translations in HA!

Proposed change

This adds config number entities for the OccupancySensing pir_o_to_u_delay and pir_u_to_o_delay attributes.
The entity class for the Sonoff sensors (ultrasonic_o_to_u_delay) is also moved to be near below the PIR delay classes.

Additional information

This would avoid introducing quirks v2 entities, e.g. for the Hue sensors or the Frient sensor below:

• Add custom clusters for frient motion sensors, cover all features zha-device-handlers#4427

IIRC there was an issue with Hue sensors returning this attribute was unsupported during pairing, but maybe that was only an issue because of the manufacturer code stuff we had going on. I'll need to recheck that.

Sonoff specific entity – ultrasonic_o_to_u_delay

In the future, we may wanna look at exposing that entity for all devices, just with the limits removed.
All these entities will end up using the BOX NumberMode in HA anyway (where you can even enter numbers outside min/max IIRC), so these limits are more artificial.

TODO: Also look at attributes in SonoffPresenceSenorTimeout (device class + unit of measurement + unnecessary attributes).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.45%. Comparing base (aa03919) to head (6814d30).

Additional details and impacted files

@@           Coverage Diff           @@
##              dev     #669   +/-   ##
=======================================
  Coverage   97.44%   97.45%           
=======================================
  Files          62       62           
  Lines       10731    10752   +21     
=======================================
+ Hits        10457    10478   +21     
  Misses        274      274           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[dmulcahey]

LGTM