Add Maintainers for Platform/Intel/Tools and Silicon/Intel/Tools directory

Based on the proposal https://edk2.groups.io/g/devel/message/42546

,
Platform/Intel/Tools and Silicon/Intel/Tools directory will be created to
include some tools for the platform integration. Now, those tools are used
and verified by Intel platform.

Signed-off-by: Liming Gao <liming.gao@intel.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Bob Feng <bob.c.feng@intel.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>