Update CI-NG components to be part of the platform

The "platform" part of Harness gets installed no matter what. In the current iteration of the chart, those pieces are installed as sub charts. Migrate all components in the ci-ng folder into sub charts to ensure that they always get installed.

Acceptance Criteria

• Move components out of chart/templates/ci-ng/ and into their own respective subchart
• Delete the ci-ng folder once all components are moved
• Test that deployments still work
• Submit MR