feat(proposal): Headlamp Plugin for PipeCD

What would you like to be added:

A plugin for Headlamp that integrates with PipeCD to display CI/CD pipelines, deployment status, and related insights directly within the Headlamp dashboard.

The plugin would allow users to:

• View PipeCD applications and pipeline states
• Monitor real-time deployment status (running, succeeded, failed)
• Access deployment logs and history (including rollbacks)
• See events such as deployment triggers, failures, and drift detection
• Support multi-project/multi-tenant environments with proper RBAC

Why is this needed:

Currently, users must switch between Headlamp (for Kubernetes management) and PipeCD (for CI/CD visibility). This context switching slows down workflows and reduces operational efficiency.

Integrating PipeCD into Headlamp would provide:

• A unified Kubernetes + CI/CD experience
• Faster debugging and monitoring of deployments
• Better visibility into GitOps workflows within a single interface

This would improve developer and operator productivity, especially in environments where Kubernetes is the central platform for application management.