BaseTools/GenMake: Sort generated makefile tool definitions

BaseTools/GenMake: Sort generated makefile tool definitions

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3353

Sort the tool definition content of generated makefiles to help
verify that makefile contents have not changed after BaseTools
code changes.

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Yuwei Chen <yuwei.chen@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Bob Feng <bob.c.feng@intel.com>
Reviewed-by: Yuwei Chen <yuwei.chen@intel.com>