Add GTFS stops processor with JSON export functionality

[ksharma-xyz]

TL;DR

Added a comprehensive README.md file to document the GTFS Stops Processor project.

What changed?

• Added project overview and description
• Included setup instructions and prerequisites
• Documented usage examples with code snippets
• Added project structure and build instructions
• Included licensing and contact information
• Added details about the project's connection to the KRAIL app

How to test?

1. View the README.md file in the repository
2. Verify all links are working correctly
3. Ensure code snippets are properly formatted
4. Confirm contact information is accurate
5. Validate that setup instructions are complete and accurate

Why make this change?

To provide clear documentation for developers working with the GTFS Stops Processor, making it easier for new contributors to understand and use the project. This documentation is essential for maintaining the project and ensuring proper integration with the KRAIL app.

[ksharma-xyz]

• Add GTFS stops processor with JSON export functionality #32 👈 (View in Graphite)
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