realme_sdm710 : Intial skeleton

* References from current tree for android-9 branch
* https://github.com/bigbiff/android_device_oneplus_kebab
* Set default brightness to 230, matching stock values
* Disable screen time out/screen off due to unresponsive touch
* Kernel is unified to fix touchscreen for realme 5 pro
https ://github.com/pjgowtham/kernel_realme_sdm710
* fstab entries for otg and sdcard1 added to support realme 3 pro
* Match init.recovery.qcom.rc from CAF
* ueventd.rc pulled from stock RUI2
* Manifest pulled from stock RUI2