infra: add linting and formatting for js projects (#230)

* wip

* wip

* wip

* format

* wip(mobile): lint and format

* cleanup

* nits

* nits

* idiomatic react

* nit

* format all root files

js/desktop/src/lib/utils.ts

@@ -1,12 +1,12 @@
-import { clsx, type ClassValue } from "clsx"
-import { twMerge } from "tailwind-merge"
- 
+import { clsx, type ClassValue } from 'clsx';
+import { twMerge } from 'tailwind-merge';
+
 export function cn(...inputs: ClassValue[]) {
-  return twMerge(clsx(inputs))
+  return twMerge(clsx(inputs));
 }
 
 export function getInitials(email: string): string {
-  const prefix = email.split("@")[0] ?? "";
+  const prefix = email.split('@')[0] ?? '';
   return prefix.slice(0, 2).toUpperCase();
 }