feat: make async_get_service_info available on the Zeroconf object

Since the AsyncServiceBrowser will return a Zeroconf object, it was
not obvious how to do an async lookup because only get_service_info
was exposed on the Zeroconf object. async_get_service_info has been
moved to the Zeroconf object, and AsyncZeroconf.async_get_service_info
now wraps this method

tests/test_asyncio.py

@@ -680,6 +680,10 @@ async def test_service_info_async_request() -> None:
     assert aiosinfo is not None
     assert aiosinfo.addresses == [socket.inet_aton("10.0.1.3")]
 
+    aiosinfo = await aiozc.zeroconf.async_get_service_info(type_, registration_name)
+    assert aiosinfo is not None
+    assert aiosinfo.addresses == [socket.inet_aton("10.0.1.3")]
+
     aiosinfos = await asyncio.gather(
         aiozc.async_get_service_info(type_, registration_name),
         aiozc.async_get_service_info(type_, registration_name2),