Matter support for Rain sensor

[s-hadinger]

Description:

Matter support for Rain sensor, matched to a Switch, also defined in bridged mode and virtual mode.

Also includes refactoring to group common code for binary sensors based on Switch. Overall saves a few bytes while adding a new type at the same time.

Checklist:

• The pull request is done against the latest development branch
• Only relevant files were touched
• Only one feature/fix was added per PR and the code change compiles without warnings
• The code change is tested and works with Tasmota core ESP8266 V.2.7.6
• The code change is tested and works with Tasmota core ESP32 V.3.0.1
• I accept the CLA.

NOTE: The code change must pass CI tests. Your PR cannot be merged unless tests pass