The Contributor's Quick Start isn't quick enough and needs some TLC

### What do you see as an issue?

The [Contributor's Quick Start](https://github.com/apache/airflow/blob/main/contributing-docs/03_contributors_quick_start.rst) is super long and arguably confusing

There are also a handful of issues with the guide now. Here's an example, :


### Solving the problem

The guide references several different ways to run an Airflow dev environment:
* Containers with different flavors
* Docker
* Colima
* Docker compose
* Hatch, pyenv, pyenv-virtualenv, or virtualenvwrapper
* Postgres (not necessary for a lot of contributions, especially for someone new to contributing here)
* Breeze

I think we should align on the truly simplest way for users to make their first contribution and move everything else to separate guides.

### Anything else

_No response_

### Are you willing to submit PR?

- [X] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)