Add from-scratch setup instructions for python novices

What would you like to see?

Lots of our users are not familiar with setting up python or virtual environments, causing some particular issues for dealing with the R and python mixed environment issues.

We should add a page to the docs with from-scratch recommended python setup instructions. e.g.

1. Install a conda environment manager (mamba)
2. Install an IDE such as vs code
3. Create a project folder
4. Create a new conda environment for soundscapy, using mamba
5. How to open a Jupyter notebook, etc. in the IDE and connect to the conda environment
6. etc.

Why would this help?

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