SPIKE: Move Macros to Task SDK

[kaxil]

Make a plan for porting https://airflow.apache.org/docs/apache-airflow/stable/templates-ref.html#macros to Task SDK.

Macros are used in Jinja Templates and some of them are provided built-in and users can register some via Airflow Plugins: https://airflow.apache.org/docs/apache-airflow/stable/authoring-and-scheduling/plugins.html

[kaxil]

Some of the macros that did not have new dependencies have been ported in #45444

[vatsrahul1001]

@kaxil @amoghrajesh While testing our regression DAG's with airflow main we see our DAG's are failing as macros are not implemented. Do we plan to get this done before airflow alpha's?

More details here: https://astronomer.slack.com/archives/C01UJJEN0P3/p1738051755616179?thread_ts=1738051741.614759&cid=C01UJJEN0P3

[vatsrahul1001]

As discussed with @kaxil macros.ds_add and macros.random should work. I will verify this again.

[kaxil]

#46867 should take care of existing/built-in macros and fix your test dag @vatsrahul1001 .

However, user-defined macros, registered via Airflow Plugin (docs link), is still pending as part of this issue