Add services and auth

src/services/channel/channel.ts

@@ -0,0 +1,10 @@
+import type { Channel } from "../../generated/prisma/client.js";
+import { getDB } from "../../store/store.js";
+
+const getChannelById = async (id: string): Promise<Channel | null> => {
+    return await getDB().channel.findUnique({
+        where: { id: id },
+    });
+};
+
+export { getChannelById };