refactor: use betterauth instead of workos

packages/convex/http.ts

@@ -0,0 +1,7 @@
+import { httpRouter } from "convex/server"
+import { authComponent, createAuth } from "./auth"
+
+const http = httpRouter()
+// CORS handling is required for client side frameworks
+authComponent.registerRoutes(http, createAuth, { cors: true })
+export default http