[TASK] Generate Helm chart schema

[aabouzaid]

Related to

Epic: https://github.com/camunda/distribution/issues/312

Overview

Many users faced basic issues because we typos where those typos could be easily spotted if we provided a chart schema file.

We already use Readme Generator For Helm and annotated all keys in the values file. So generating the schema is just a matter of setting types.

Actions

Sub-tasks

Beta Give feedback

1. Set the schema types for Helm chart 8.7
2. Ensure the schema works with the current CI workflows.
3. Ensure that the scheme is auto-generated like the readme file.