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

Odaimoko

2023-11-28 660aae62e09ea1f5ec957149b78bfd01a85bd79f

 quartz/components/styles/clipboard.scss

@@ -10,7 +10,6 @@
  background-color: var(--light);
  border: 1px solid;
  border-radius: 5px;
  z-index: 1;
  opacity: 0;
  transition: 0.2s;