feat: Add support for "inputs" parameter when running a pipeline

[ShaunMaher]

Hi.

This project is going to save me a LOT of time. Thanks so much!

I have a gitlab pipeline that uses inputs. The API for starting a pipeline and providing the inputs is documented here: https://docs.gitlab.com/api/pipelines/#create-a-new-pipeline.

I have had Claude Code make the required changes to your code. I'm no typescript expert but they look minimal and sane to me. I will submit a PR shortly.

Cheers
Shaun.