WIP: feat: add Kubernetes Helm chart for OpenViking deployment

[ZaynJarvis]

Add a production-ready Helm chart for deploying OpenViking on Kubernetes with support for GCP and AWS cloud providers.

Features:

• LoadBalancer service with cloud-specific annotations
• Support for GCP and AWS via values.yaml cloudProvider setting
• Secret management for ov.conf configuration
• Health checks (liveness and readiness probes)
• Optional HPA for autoscaling
• Optional PVC for persistent storage
• Uses uv container for streamlined deployment
• Comprehensive documentation

Usage:
helm install openviking ./deploy/helm/openviking \ --set cloudProvider=gcp \ --set openviking.config.embedding.dense.api_key=YOUR_KEY

Description

Related Issue

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Refactoring (no functional changes)
• Performance improvement
• Test update

Changes Made

Testing

• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have tested this on the following platforms:
  • Linux
  • macOS
  • Windows

Checklist

• My code follows the project's coding style
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published

Screenshots (if applicable)

Additional Notes