ThemePicker: Bring back fonts, icon pack, shape customization

 * Based on android 11 impl
 * Sections moved to new UI for Android 14

Co-authored-by: Adithya R <gh0strider.2k18.reborn@gmail.com>
Co-authored-by: Ido Ben-Hur <idoybh2@gmail.com>
Co-authored-by: palaych <palaych@arrowos.net>
Co-authored-by: Tommy Webb <tommy@calyxinstitute.org>
Change-Id: I60b24f0cd8e898cb6d43ad190cad99a73cb7b2bb