web/admin: unify rendering and sorting of user lists

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

web/src/elements/user/utils.ts

@@ -0,0 +1,19 @@
+import { User } from "@goauthentik/api";
+
+export function UserOption(user: User): string {
+    let finalString = user.username;
+    if (user.name || user.email) {
+        finalString += " (";
+        if (user.name) {
+            finalString += user.name;
+            if (user.email) {
+                finalString += ", ";
+            }
+        }
+        if (user.email) {
+            finalString += user.email;
+        }
+        finalString += ")";
+    }
+    return finalString;
+}