Fix type hint for tracing Signal sequence content

The Signal is instantiated with a TraceConfig object but does not store
it in its mutable sequence. Fixed hinting to reflect what is expected to
be added as signal handler.

CHANGES/xxxx.bugfix

@@ -0,0 +1 @@
+``Signal`` type annotation changed from `Signal[Callable[['TraceConfig'], Awaitable[None]]]` to `Signal[Callable[ClientSession, SimpleNamespace, ...]`.

aiohttp/tracing.py

@@ -1,5 +1,5 @@
 from types import SimpleNamespace
-from typing import TYPE_CHECKING, Awaitable, Callable, Type
+from typing import TYPE_CHECKING, Union, Callable, Type
 
 import attr
 from multidict import CIMultiDict  # noqa
@@ -11,7 +11,17 @@
 if TYPE_CHECKING:  # pragma: no cover
     from .client import ClientSession  # noqa
 
-    _Signal = Signal[Callable[['TraceConfig'], Awaitable[None]]]
+    params = Union[
+        'TraceRequestStartParams', 'TraceRequestEndParams',
+        'TraceRequestExceptionParams', 'TraceConnectionQueuedStartParams',
+        'TraceConnectionQueuedEndParams', 'TraceConnectionCreateStartParams',
+        'TraceConnectionCreateEndParams', 'TraceConnectionReuseconnParams',
+        'TraceDnsResolveHostStartParams', 'TraceDnsResolveHostEndParams',
+        'TraceDnsCacheHitParams', 'TraceDnsCacheMissParams',
+        'TraceRequestRedirectParams',
+        'TraceRequestChunkSentParams', 'TraceResponseChunkReceivedParams',
+    ]
+    _Signal = Signal[Callable[[ClientSession, SimpleNamespace, params], None]]
 else:
     _Signal = Signal