Add pre-reqs section to README

[korikuzma]

Feature description

It would be nice to have a per-requisites section, similar to VRS-Python, of what is needed to be installed separately in order to get the app running locally

Use case

As a user, it would be nice to know what I need to install locally ahead of time without running into issues as I'm trying to install / start the app locally

Proposed solution

No response

Alternatives considered

No response

Implementation details

Not sure if this is part of #215

Potential Impact

Less headaches for users trying to install locally!

Additional context

For example, virtualenv is not installed automatically with Python. I recommend either adding a step to install or using the built in venv module

Contribution

None