Move everything under the login dir

src/login/lib/useGetClassName.ts

@@ -0,0 +1,15 @@
+import { clsx } from "keycloakify/tools/clsx";
+import { useConstCallback } from "keycloakify/tools/useConstCallback";
+
+export function useGetClassName<ClassKey extends string>(params: {
+    defaultClasses?: Record<ClassKey, string | undefined>;
+    classes?: Partial<Record<ClassKey, string>>;
+}) {
+    const { defaultClasses, classes } = params;
+
+    const getClassName = useConstCallback((classKey: ClassKey): string => {
+        return clsx(classKey, defaultClasses?.[classKey], classes?.[classKey]);
+    });
+
+    return { getClassName };
+}