I'd like to propose adding type annotations to excon to improve developer experience and catch potential bugs at development time. Before starting on any implementation, I wanted to gather the maintainers' thoughts on which approach would be most best for this project.

There are currently three main approaches for adding types to Ruby codebases:

• Sorbet
• RBS
• Inline RBS comments

I'm happy to start with a proof-of-concept implementation using the preferred approach, focusing on the core public APIs first. What are your thoughts? Would this be a valuable addition to excon?