feat: add file upload pattern

styleguide.css

@@ -2,6 +2,7 @@
 @import "./styles/02-base.css";
 @import "./styles/03-typography-helpers.css";
 @import "./styles/10-components-interactive-elements.css";
+@import "./styles/47-patterns-file-upload.css";
 @import "./styles/20-patterns-portal-header.css";
 @import "./styles/21-patterns-options-row.css";
 @import "./styles/22-patterns-object-card.css";