Added quick start section to readme

[sususu5]

Description 🧾

Added quick start section to README.md.

Testing

Running the commands in order to check whether the client and server are running successfully.

Checklist

• 📍 You have assigned yourself to this pull request.
• 🔗 You have linked an issue to which this pull request closes.
• 💭 Leave any relevant specific directions to reviewers.
• 👀 No secrets in clear text in the pull request.
• 🎟️ To categorise release notes, the pull request should be labelled with at least one of these labels:
  • feature: for application feature improvement or new features
  • bug: fixing something that previously wasn't working
  • dev: development-side related changes
  • docker: updates to the Docker code
  • setup: changes to the setup/infrastructure of the codebase
  • test: updates to internal testing