* Testing new wrapper functions to read Usermod config
* Usermod Settings polishing
- remove getBoolFromJsonKey() (no longer needed), fix getValueFromJsonKey(element, destination, defaultvalue)
- Update Usermod Settings html "number" field to use step="any", and make wider to make maximum values fully visible
- step="any" allows viewing/submitting full 7/8-digit float values, and the arrow buttons step by 1 now, instead of .00001 (which wasn't good for integers or floats)
- html wasn't generated/compressed yet
* Update usermod_v2_example.h with more complete example and documentation for Usermod Settings
- readFromConfig() has three options for how to load values from the config JSON, we need to pick one
* Update/rename usermode_rotary_brightness_color, to be used as an example of more robust parsing Usermod Settings values
* Update Usermod example, rename getValueFromJsonKey() to getJsonValue()
- chose single readFromConfig() pattern
- demonstrating 3-argument getJsonValue()
- remove leftover printf in getJsonValue()
Co-authored-by: Louis Beaudoin <louis@embedded-creations.com>
