Refactor organization name from Open-JDBC-Proxy to Open-J-Proxy

[Copilot]

This PR updates all GitHub organization references throughout the Helm repository from Open-JDBC-Proxy to Open-J-Proxy as part of the broader organizational rebranding effort.

Changes Made

The following files have been updated to reflect the new organization name:

Repository URLs Updated

• README.md: Updated Helm repository URL and GitHub links in documentation
• charts/ojp-server/README.md: Updated Helm repository installation command
• charts/ojp-server/Chart.yaml: Updated chart home URL and icon URL

Specific Changes

• Helm repository URL: https://Open-JDBC-Proxy.github.io/ojp-helm → https://Open-J-Proxy.github.io/ojp-helm
• GitHub repository references: github.com/Open-JDBC-Proxy/ → github.com/Open-J-Proxy/
• Chart icon URL updated to point to the new organization repository

Validation

All changes have been validated to ensure functionality is preserved:

• ✅ Helm chart passes helm lint validation
• ✅ Chart templates correctly with helm template
• ✅ No remaining references to the old organization name
• ✅ All documentation and installation instructions updated consistently

Impact

This change affects users who reference the Helm repository URL or GitHub links in the documentation. The functionality of the Helm charts themselves remains unchanged - only the organizational references have been updated.

Users will need to update their Helm repository configurations to use the new URL:

helm repo add ojp https://Open-J-Proxy.github.io/ojp-helm

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