message: Add GCC 7.3.0 MingW64 kit
diff: @@ -61,6 +61,11 @@ const DEFAULT_CYGWIN_KITS: KitEnvironment[] = [
  ];
  const DEFAULT_MINGW_KITS: KitEnvironment[] = [
  + {
  + defaultKit: 'GCC 7.3.0',
  + expectedDefaultGenerator: 'MinGW Makefiles',
  + path: ['C:\\Program Files\\mingw-w64\\x86_64-7.3.0-posix-seh-rt_v5-rev0\\mingw64\\bin']
  + },
  {
  defaultKit: 'GCC 7.2.0',
  expectedDefaultGenerator: 'MinGW Makefiles',
  