BaseTools/VfrCompile: Add two new option for VfrCompile

BaseTools/VfrCompile: Add two new option for VfrCompile

1.--autodefault option
   VfrCompile will generate default opcodes for questions if some
   default are missing.
2 --checkdefault option
   VfrCompile will check whether every question has no default or
   has all default. If not, will generate an error to let user know
   the question misses default.

Cc: Liming Gao <liming.gao@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>