feat: Made scripts work with docker compose plugin ('docker compose' vs 'docker-compose')

Closes #1587 (closed)

What does this MR do?

Add support for docker-compose-plugin only development environments.

How confident are you it won't break things if deployed?

Very confident.

Links to related issues

#1587 (closed)

How to test

1. Use either distrobox (haven't tested this one) or a VM with a fresh Ubunutu installed.
2. Install only git, docker and docker-compose-plugin. docker-compose will not be installed
3. Checkout the foodsharing sourcecode and try to start using the start-script.

Checklist

• added a test, or explain why one is not needed/possible
  • This is not needed, as scripts aren't tested (are they?)
• no unrelated changes
• asked someone for a code review
• set a "for:" label to indicate who will be affected by this change
• added to the next milestone (see https://gitlab.com/foodsharing-dev/foodsharing/-/milestones, unless it has a "for:Dev" label)
• added an entry to CHANGELOG.md
• added a short text that can be used in the release notes
• Once your MR has been merged, you are responsible to create a testing issue in the Beta Testing forum: https://foodsharing.de/?page=bezirk&bid=734&sub=forum. Please change the MRs label to "state:Beta testing".
  • Consider writing a detailed description in German.
  • Describe in a few sentences, what should be tested from a user perspective.
  • Also mention different settings (e.g. different browsers, roles, ...) how this change can be tested.
  • Be aware, that also non technical people should understand.

Release notes text in German