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>