SecurityPkg/SecureBootConfigImpl.c: Secure Boot DBX UI Enhancement

SecurityPkg/SecureBootConfigImpl.c: Secure Boot DBX UI Enhancement

Use 2-level format to display signature list and signature data.
Support batch delete operation to delete signature list or signature data.
Display more useful information for each signature data.

Contributed-under: TianoCore Contribution Agreement 1.0
Cc: Zhang Chao B <chao.b.zhang@intel.com>
Cc: Long Qin <qin.long@intel.com>
Signed-off-by: Chen A Chen <chen.a.chen@intel.com>
Reviewed-by: Long Qin <qin.long@intel.com>
Reviewed-by: Zhang Chao B <chao.b.zhang@intel.com>