feat: Implement Convex authentication including sign-in/sign-up UI, Convex client provider, and backend auth functions.

convex/schema.ts

@@ -0,0 +1,9 @@
+import { defineSchema, defineTable } from "convex/server";
+import { authTables } from "@convex-dev/auth/server";
+
+const schema = defineSchema({
+    ...authTables,
+    // Your other tables here
+});
+
+export default schema;