Zigbee support for air sensors

[s-hadinger]

Description:

Zigbee extend multiplier, divider and base from 16 bits to 32 bits to make it compatible with air sensors.

Added a plugin for generic CO2 sensor.

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.2.7.4.9
• The code change is tested and works with Tasmota core ESP32 V.2.0.9
• I accept the CLA.

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

[jeroenst]

Do you maybe have a link to a compatible zigbee co2 sensor?

[s-hadinger]

The link provided by cronyx on Discord no longer works.