feat: self-service user signup (#672)

Co-authored-by: Elias Schneider <login@eliasschneider.com>

frontend/src/lib/utils/redirection-util.ts

@@ -7,7 +7,13 @@ export function getAuthRedirectPath(path: string, user: User | null) {
 	const isAdmin = user?.isAdmin;
 
 	const isUnauthenticatedOnlyPath =
-		path == '/login' || path.startsWith('/login/') || path == '/lc' || path.startsWith('/lc/');
+		path == '/login' ||
+		path.startsWith('/login/') ||
+		path == '/lc' ||
+		path.startsWith('/lc/') ||
+		path == '/signup' ||
+		path.startsWith('/signup/') ||
+		path.startsWith('/st/');
 	const isPublicPath = ['/authorize', '/device', '/health', '/healthz'].includes(path);
 	const isAdminPath = path == '/settings/admin' || path.startsWith('/settings/admin/');
 

frontend/src/lib/utils/try-catch-util.ts

@@ -0,0 +1,20 @@
+type Success<T> = {
+	data: T;
+	error: null;
+};
+
+type Failure<E> = {
+	data: null;
+	error: E;
+};
+
+export type Result<T, E = Error> = Success<T> | Failure<E>;
+
+export async function tryCatch<T, E = Error>(promise: Promise<T>): Promise<Result<T, E>> {
+	try {
+		const data = await promise;
+		return { data, error: null };
+	} catch (error) {
+		return { data: null, error: error as E };
+	}
+}