BaseTools: Add RC_PATH define for VS2017/2019

BaseTools: Add RC_PATH define for VS2017/2019

https://bugzilla.tianocore.org/show_bug.cgi?id=2315

Add use of RC_PATH define that provides the path to the resource
compiler that is typically provided in a Windows SDK.  The path
changes with different Windows SDK releases.  This define is set
to the WINSDK_PATH_FOR_RC_EXE environment variable.  This
environment variable must be set to the path to the currently
installed resource compiler (rc.exe).

Update set_vsprefix_envs.bat to set WINSDK_PATH_FOR_RC_EXE
if a Windows SDK is detected.

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>