DOC - environment-dev.yaml file for setting up dev env

[dcmcand]

Context

Currently to get started developing with conda-store a developer has to:

conda create --name conda-store-ui
conda activate conda-store-ui
conda install -c conda-forge yarn nodejs==16.14.2

Value and/or benefit

Split from conda-incubator/conda-store-ui#335

Adding a environment-dev.yaml file with all the dev dependencies defined would smooth the developer onboarding experience.

Anything else?

No response

[dcmcand]

environment_dev.yml was added in https://github.com/conda-incubator/conda-store-ui/pull/293

[trallard]

Since there is an environment_dev.yml file now is this a matter of documenting its use only?

[dcmcand]

yes