How can I add individual settings additional to Android system settings?
EDIT: As far as I understood I have to compile/build an own individual Android image from AOSP, with individual settings, and flash this android image onto that device. I searched how to customize/add some own settings to the system settings with AOSP - in vain.
I'll reward helpful links/tutorials/videos with where/how to make these changes in the AOSP to customize settings.
How can I add individual settings additional to Android system settings?
By building a custom Android image and changing the settings app at packages/apps/Settings/src/com/android/settings.