feat: Implement custom error classes, a Drizzle transaction utility, and update Discord.js ephemeral message flags.

src/lib/db.ts

@@ -0,0 +1,15 @@
+import { DrizzleClient } from "./DrizzleClient";
+import type { Transaction } from "./types";
+
+export const withTransaction = async <T>(
+    callback: (tx: Transaction) => Promise<T>,
+    tx?: Transaction
+): Promise<T> => {
+    if (tx) {
+        return await callback(tx);
+    } else {
+        return await DrizzleClient.transaction(async (newTx) => {
+            return await callback(newTx);
+        });
+    }
+};