Berry add light_pixels values to 'tasmota.settings'

[s-hadinger]

Description:

Berry add light_pixels values to tasmota.settings: light_pixels, light_pixels_reverse, light_pixels_height_1, light_pixels_alternate

Internal renaming of light_pixels_height to light_pixels_height_1 to insist that it's "height - 1"

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.2.7.8
• The code change is tested and works with Tasmota core ESP32 V.3.1.0.241206
• I accept the CLA.

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