refactor(backend): split log files into separate file

routes/api/images/index.ts

@@ -1,7 +1,7 @@
 import { FreshContext, Handlers } from "$fresh/server.ts";
 import { getImageContent } from "@lib/image.ts";
 import { SILVERBULLET_SERVER } from "@lib/env.ts";
-import { createLogger } from "@lib/log.ts";
+import { createLogger } from "@lib/log/index.ts";
 import { isLocalImage } from "@lib/string.ts";
 
 const log = createLogger("api/image");