feat: add async job queue

app/queue.py

@@ -0,0 +1,15 @@
+import asyncio
+
+
+class JobQueue:
+    def __init__(self) -> None:
+        self._queue: asyncio.Queue[str] = asyncio.Queue()
+
+    async def enqueue(self, job_id: str) -> None:
+        await self._queue.put(job_id)
+
+    async def dequeue(self) -> str:
+        return await self._queue.get()
+
+    def size(self) -> int:
+        return self._queue.qsize()