drop async-service dep and copy relevant code into a local async_service

tool, updated for modern handling of ExceptionGroup

libp2p/tools/async_service/_utils.py

@@ -0,0 +1,41 @@
+# Copied from https://github.com/ethereum/async-service
+
+import os
+from typing import (
+    Any,
+)
+
+
+def get_task_name(value: Any, explicit_name: str = None) -> str:
+    # inline import to ensure `_utils` is always importable from the rest of
+    # the module.
+    from .abc import (  # noqa: F401
+        ServiceAPI,
+    )
+
+    if explicit_name is not None:
+        # if an explicit name was provided, just return that.
+        return explicit_name
+    elif isinstance(value, ServiceAPI):
+        # `Service` instance naming rules:
+        #
+        # 1. __str__ **if** the class implements a custom __str__ method
+        # 2. __repr__ **if** the class implements a custom __repr__ method
+        # 3. The `Service` class name.
+        value_cls = type(value)
+        if value_cls.__str__ is not object.__str__:
+            return str(value)
+        if value_cls.__repr__ is not object.__repr__:
+            return repr(value)
+        else:
+            return value.__class__.__name__
+    else:
+        try:
+            # Prefer the name of the function if it has one
+            return str(value.__name__)  # mypy doesn't know __name__ is a `str`
+        except AttributeError:
+            return repr(value)
+
+
+def is_verbose_logging_enabled() -> bool:
+    return bool(os.environ.get("ASYNC_SERVICE_VERBOSE_LOG", False))