STR_GEN_ERR_NOT_FOUND is added and currently is only used by alias command. This string template can be used by other commands as well. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Cc: Jaben Carsey <jaben.carsey@intel.com> Reviewed-by: Tapan Shah <tapandshah@hpe.com>