Add astro cli project + kind Raycluster setup instruction

[pankajastro]

This PR introduces several enhancements aimed at improving the setup and local testing

• Documentation for RayCluster Setup: Added comprehensive instruction documents to facilitate the setup of RayCluster using Kind.
• Example Connection for Local Kind RayCluster: Included an example configuration to demonstrate how to connect to a local RayCluster deployed with Kind.
• Introduce Astro-CLI: Introduced the astro-cli Airflow project, allowing users to easily spin up Airflow and execute example DAGs from this repository.
• Makefile: Added a Makefile that wraps astro-cli and pip commands, simplifying the process for testing local changes.

Docs generated HTML

Created follow-up tickets: https://github.com/astronomer/astro-provider-ray/issues/89 and https://github.com/astronomer/astro-provider-ray/issues/88

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 98.22%. Comparing base (4a362a2) to head (85a5357).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #83 +/- ## ======================================= Coverage 98.22% 98.22% ======================================= Files 5 5 Lines 564 564 ======================================= Hits 554 554 Misses 10 10 ```

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[pankajastro]

Should we also log a follow-up ticket for guiding on how to deploy to Astro deployment & how to create an Airflow connection there with mounting/using the needed Kubeconfig file?

Created https://github.com/astronomer/astro-provider-ray/issues/89 to improve contributing guide and https://github.com/astronomer/astro-provider-ray/issues/88 for Astro deployment guide