Update streaming to use relative imports

Author: Graden Rea

Diff for: src/lib/streaming.ts

@@ -1,7 +1,7 @@
 import { ReadableStream, type Response } from '../_shims/index';
 import { GroqError } from '../error';
 
-import { APIError } from 'groq/error';
+import { APIError } from '../error';
 
 type Bytes = string | ArrayBuffer | Uint8Array | Buffer | null | undefined;