✨ Register: working order sum logic

💄 Add more icons and load them as react components

frontend/src/typings.d.ts

@@ -1,5 +1,6 @@
 declare module "*.svg" {
-  const content: unknown;
+  import { ReactElement, SVGProps } from "react";
+  const content: (props: SVGProps<SVGElement>) => ReactElement;
   export default content;
 }
 declare module "*.module.css";