Add file tree to menu

svelte/src/lib/FilesystemAPI.svelte.ts

@@ -59,6 +59,10 @@ export class FSNode {
 			(this.password_permissions !== undefined && Object.keys(this.password_permissions).length > 0)
 	}
 
+	is_hidden = (): boolean => {
+		return this.name.startsWith(".")
+	}
+
 	download = () => {
 		const a = document.createElement("a")