feat: implement file explorer component (closes #201) (#452)

Ben Schlegel

2023-09-15 91f9ae2d71d5c28ba7d2182eed5a9f77da1fbe8d

 quartz/components/styles/legacyToc.scss

@@ -12,7 +12,7 @@
      margin: 0;
    }
  }
    

  & ul {
    list-style: none;
    margin: 0.5rem 1.25rem;