Add astro cli project to run airflow+dagfactory

[pankajastro]

Summary: This PR introduces the Astro CLI project into the repository and removes the legacy Dockerfile.

Changes:

• Added: Astro CLI project to facilitate managing the Airflow environment.
• Removed: Legacy Dockerfile to streamline the project and avoid confusion.
• Usage: To start the Airflow container, run the following command:

make docker-run

closes: #193

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.96%. Comparing base (55a1a2f) to head (f6f6f35).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #267   +/-   ##
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  Coverage   93.96%   93.96%           
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  Files           8        8           
  Lines         630      630           
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  Hits          592      592           
  Misses         38       38           

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[tatiana]

Thanks for addressing all the feedback, @pankajastro , this is invaluable for us to validate DAG factory in Astro