vendor: Import /e/ bootanimation & scripts

 * snippets to conver rgba to rgb and vice versa can be found at https://gitlab.e.foundation/e/os/android_vendor_eos/-/snippets



Signed-off-by: Aayush Gupta <theimpulson@e.email>
Change-Id: Ic13b8dca643c317e7d355ec6bb76c10e4bdceebe