Guide for Running TimeOverflow Without Docker

# Guide for Running TimeOverflow Without Docker

Hello! I saw that the current setup instructions for TimeOverflow focus on using Docker. I’ve prepared an alternative setup guide for running the app directly on a local machine without using Docker, in case it’s useful for contributors who prefer that approach.

It includes step-by-step instructions for:
- Installing Ruby 3.2.2
- Setting up PostgreSQL
- Running the Rails app locally without Docker
- Common issues and how to resolve them

You can check out the prototype guide here: [https://manual-timeoverflow.netlify.app/](https://manual-timeoverflow.netlify.app/)

Would it be helpful to include this in the official documentation? I could add it as a Wiki page or a section in the README, whichever works best for the project, and adjust it to match the project’s style.