Add name param to spawn

[dave-fitzgerald-bc]

Feature request:

I would like to be able to use the scheduler API to set and get task/job names. Something like so:

Proposed Usage

await scheduler.spawn(my_task(), name="my-task")
await scheduler.spawn(another_task(), name="another-task")

jobs = [job for job in scheduler._jobs]
task_names = [job._task.get_name() for job in jobs]

Output:

task_names
> ['my-task', 'another-task']

Bonus Usage

Even better would be delegating job.get_name() to job._task.get_name() so the final usage could be like:

job_names = [job.get_name() for job in scheduler._jobs]

Output:

job_names
> ['my-task', 'another-task']

At the moment if I needed to get the task name I would have to use the following and I'd rather not access so many private variables if possible:

task_names = [job._coro.cr_code.co_name for job in scheduler._jobs]

[Dreamsorcerer]

I think we could pass the name parameter to asyncio.create_task() somehow and then maybe add a helper method to also fetch the name.

Feel free to make a PR.

[dave-fitzgerald-bc]

Thanks @Dreamsorcerer & @zoicsoftware for your time and effort