move throttler example. we dont need it in src

src/scripts/throttler_example.py

@@ -0,0 +1,15 @@
+import aiohttp
+import asyncio
+
+from asyncio_throttle.throttler import Throttler
+
+throttler = Throttler(rate_limit=500, period=60)  # 500 requests per minute
+
+
+async def worker(throttler, session):
+    while True:
+        async with throttler:
+            async with session.get("http://example.com") as resp:
+                do_some_job_with(await resp.text())
+
+        await asyncio.sleep(0.05)