Added the register component to content

frontend/src/Pages/AdminPages/AdminAddUser.tsx

@@ -1,18 +1,16 @@
 import BasicWindow from "../../Components/BasicWindow";
 import Button from "../../Components/Button";
+import Register from "../../Components/Register";
 
 function AdminAddUser(): JSX.Element {
-  const content = <></>;
+  const content = (
+    <>
+      <Register />
+    </>
+  );
 
   const buttons = (
     <>
-      <Button
-        text="Finish"
-        onClick={(): void => {
-          return;
-        }}
-        type="button"
-      />
       <Button
         text="Back"
         onClick={(): void => {