docs: add Imk&Cc's homepage to showcase.md (#595)

Odaimoko

2023-11-28 660aae62e09ea1f5ec957149b78bfd01a85bd79f

 quartz.config.ts

@@ -69,6 +69,7 @@
      }),
      Plugin.Assets(),
      Plugin.Static(),
      Plugin.NotFoundPage(),
    ],
  },
}