Define LCB_CC_STRING for MS VS 17

Change-Id: I818f294e43b3144e94c00a4090ee7d67e173a6cf
Reviewed-on: https://review.couchbase.org/c/libcouchbase/+/224863
Reviewed-by: Sergey Avseyev <sergey.avseyev@gmail.com>
Tested-by: Sergey Avseyev <sergey.avseyev@gmail.com>

Author: avsej

cmake/Modules/GetPlatformCCInfo.cmake

@@ -27,6 +27,8 @@ IF(MSVC)
         SET(LCB_CC_STRING "vc15")
     ELSEIF(MSVC_VERSION GREATER_EQUAL 1920 AND MSVC_VERSION LESS_EQUAL 1929)
         SET(LCB_CC_STRING "vc16")
+    ELSEIF(MSVC_VERSION GREATER_EQUAL 1930 AND MSVC_VERSION LESS_EQUAL 1949)
+        SET(LCB_CC_STRING "vc17")
     ENDIF()
 ELSE()
     IF(UNIX)