.pytool: CI Settings to support StandaloneMmPkg

.pytool: CI Settings to support StandaloneMmPkg

Bugzilla: 3150 (https://bugzilla.tianocore.org/show_bug.cgi?id=3150)

Update pytools configuration to enable StandaloneMmPkg
and update package status in documentation.

Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Bret Barkelew <bret.barkelew@microsoft.com>
Acked-by: Jiewen Yao <Jiewen.yao@intel.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>