B2B-84: add public message sync function and audit schema (#5)

* B2B-84: add public message sync function and audit schema

* clean up unnecessary comment

* clean up unnecessary seed file

* address comments

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Co-authored-by: Helena <helena@Helenas-MacBook-Pro.local>

lib/utils.ts

@@ -4,3 +4,8 @@ import { twMerge } from "tailwind-merge";
 export function cn(...inputs: ClassValue[]) {
   return twMerge(clsx(inputs));
 }
+
+export function toArray<T>(input?: T | T[] | null): T[] {
+  if (!input) return [];
+  return Array.isArray(input) ? input : [input];
+}