Add support for VS2022 Build Tools (#783)

Author: hjmallon

cmake/modules/hunter_setup_msvc.cmake

@@ -211,6 +211,12 @@ macro(hunter_setup_msvc)
           set(_hunter_vcvarsall_path
               "${_hunter_vcvarsall_path}/../../../VC/Auxiliary/Build"
           )
+          if (NOT EXISTS "${_hunter_vcvarsall_path}/vcvarsall.bat")
+            # VS 2022 Build Tools has it here
+            set(_hunter_vcvarsall_path
+              "${_hunter_vcvarsall_path}/../../../../VC/Auxiliary/Build"
+            )
+          endif()
         else()
           hunter_fatal_error(
               "Incorrect MSVC setup:"