chore: Add the preparation script that should run on the initialization of the project and also update of the readme file

[martin-trajanovski]

Description

1. Add prepare-configuration.sh script that copies all the configuration files needed on the correct place.
2. Add prepare:start script inside the package.json to run the preparation script and start all the needed containers.
3. Update the docker-compose-local-instance.yaml file to run all the containers without the backend(because backend should be started locally in this case).
4. Update the readme file to be aware of this script existing when initializing the backend for the first time locally

Motivation

There was not enough information and explanation on how to start the backend locally.

Fixes:

https://jira.esss.lu.se/browse/SWAP-2717

Changes:

• changes made

Tests included/Docs Updated?

• [ ] Included for each change/fix?
• [ ] Passing? (Merge will not be approved unless this is checked)
• [ ] Docs updated?
• [ ] New packages used/requires npm install?
• [ ] Toggle added for new features?