[Docs] Create Getting Started Guide

[NeftaliYagua]

Description

Create a comprehensive Getting Started guide for new developers joining the Prodaric project.

Acceptance Criteria

• Prerequisites clearly listed (tools, versions)
• Step-by-step local development setup
• Database setup instructions
• Environment variables configuration
• How to run the application locally
• How to run tests
• Common troubleshooting section
• Links to other documentation
• Code of Conduct reference
• Contribution workflow overview
• Screenshots/GIFs of key steps
• Quick start with Docker Compose

Subtasks

• Document system requirements
• Write .NET SDK installation guide
• Write Node.js installation guide
• Document Docker setup
• Create .env.example file
• Write database migration guide
• Document how to seed sample data
• Add debugging setup (VS Code, Visual Studio)
• Create troubleshooting FAQ
• Add architecture overview diagram
• Review and test instructions on clean machine
• Add to main README.md

Technical Notes

• Keep instructions OS-agnostic when possible
• Provide specific commands for Linux, macOS, Windows
• Link to official documentation for third-party tools
• Use code blocks with language syntax highlighting
• Include expected output for verification steps