Installation: Add Helm Parameter for Ingress

## What would you like to be added?
Propose a new Helm parameter to optionally enable Ingress during installation.

## Why is this needed?
Currently, users need to manually create an Ingress for Karpor. This enhancement would allow users to enable Ingress via a Helm flag, reducing manual steps and improving deployment flexibility.

Expected Benefits:
- Simplified Ingress setup during installation
- Better out-of-the-box experience
- Reduced manual configuration needed

Proposed Implementation:
- Add a new boolean flag in the Helm chart (e.g., `--enable-ingress`)
- Generate Ingress YAML automatically if flag is set
- Provide default configuration with reasonable settings
- Allow additional customizations if needed

This would streamline the deployment process and improve the overall user experience.