support creating arrow-datafusion-python conda environment

[jdye64]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
Development in arrow-datafusion-python is currently limited to pip environments. While nothing is wrong with that lots of people use Conda these days. The problem lies in that if a developer/maintainer/user has Conda installed on their environment they cannot run maturin develop with both a Python virtual environment and Conda on the path. This confuses maturin leading to issues.

I think a simple solution is to also include an environment.yml file for Conda developers to use instead of relying on pip. This addition is easier enough and there is tooling available for generating pip requirements files from conda environment files which also means keeping those environments in sync shouldn't be an issue.

Describe the solution you'd like
Introduce an environment.yml file for creating an arrow-datafusion-python environment and supporting documentation. Bonus for maintainer documentation about keeping the pip and anaconda environment files in sync.

Describe alternatives you've considered
Open issue with Maturin to address the issue. The workaround of having conda environment seems worth it however.

Additional context
None

[andygrove]

Thanks @jdye64 this sounds like a great idea