Add support for inspect.iscoroutinefunction() in Coroutine provider #7

Job	Run time
Run tests with different pydantic versions	3m 45s
Run tests (3.8)	2m 13s
Run tests with coverage	3m 8s
Run tests (3.9)	2m 3s
Run linters (flake8)	1m 47s
Run tests (3.10)	2m 6s
Run tests on legacy versions (3.7)	2m 10s
Run tests (3.11)	2m 4s
Run linters (pydocstyle)	1m 43s
Run tests (3.12)	2m 10s
Run linters (mypy)	1m 52s
Run tests (3.13)	2m 5s
Run linters (pylint)	1m 53s
	28m 59s

Provide feedback