Add async support

[Archmonger]

Is there an existing issue for this?

• I have searched the existing issues

Expected feature

Async support.

Possible Solutions

Use aiohttp to add async support.

In order to keep our code simple, we should write all existing methods as async methods. Then, based on some kind of initialization parameter (ex SonarrAPI(async=True) we should run an abstract transformation on existing methods.

To oversimplify how the abstract transformation would work, async=True would replace the async functions with sync wrappers that use asyncio.run. This transformation would occur during __init__.

To minimize rewriting, we should implement a system similar to how aiohttp-requests creates and deletes the async session.

Context / Reason

Library does not have async support.

Code of Conduct

• I agree to follow this project's Code of Conduct

[Archmonger]

@marksie1988

I created this issue to explain a maintainable way we could create async support in the future.