Merge TimeDeltaSensorAsync to TimeDeltaSensor

[eladkal]

Body

We currently have TimeDeltaSensorAsync and TimeDeltaSensor.
The use case of TimeDeltaSensorAsync should be included in TimeDeltaSensor.

The Task:
There might have been some details that prevented merging these two classes before. Part of this task is to understand how we should do it in the least disruptive way (backward compatible) and provide easy to understand interface moving forward.

1. Deprecate TimeDeltaSensorAsync
2. Move the logic of TimeDeltaSensorAsync into TimeDeltaSensor(..., defer=True), examples can be found all over the source code for the defer behavior.

Committer

• I acknowledge that I am a maintainer/committer of the Apache Airflow project.

[sazuyakun]

I would love to work on this, would you assign this to me?

[jameshyphen]

Hey!

Since there hasn't been movement on this, I went ahead and implemented the feature!

[Lee-W]

Thanks! I'll reassign it to @jameshyphen