flutter_assets folder is expected to be located in "bundle folder"/data
libapp.so is expected to be located in "bundle folder"/lib
override options for icudtl.dat and libflutter_engine.so
if icudtl.dat is found in "bundle folder"/data, it will override system icudtl.dat
if libflutter_engine.so is found in "bundle folder"/lib, it will override system libflutterter_engine.so
"bundle folder" is selected using the CLI option "--b="
Signed-off-by: Joel Winarske joel.winarske@gmail.com