Support direct .__await__

Hey there, seems like a nice library. It’s just a small suggestion and opinion, but you can add __await__ for the queries, instead of kind of an annoying .run every time

class Q:
    async def _actual_call(self) -> T:
        # .... do_some_work .... '
        return 

    def __await__(self) -> Generator[None, None, T]:
        return self._actual_call().__await__()

q = Q()
await q

Suggestion related to picollo/query/base::Query

[dantownsend]

@sinisaos I’ll keep .run() as the default way of doing things in the docs. It makes it slightly more future proof, as run() can accept arguments - currently it’s just whether or not to run the query in a connection pool, which is mostly used for testing purposes, but there may be other arguments which need to be added in the future. The __await__ magic method can be there as a convenience, for people who prefer the more compact syntax. I won’t add the __call__ magic method for now - it’s just too weird.

[dantownsend]

@sinisaos Good suggestion - I’ll take a look.