goldfish-codecs: initial empty dirs for omx based codecs This is the start of omx based codecs. This codecs/ subdirectory is only meant for api 29 and after. The omx/ directory is for openmax based codecs. BUG: 124388359 Change-Id: I7f426bec486fcffb7f0c42f8175a0f8aaab3e4a4