feat: configure camunda database to be used by v2 API

[romansmirnov]

Which problem does the PR fix?

What's in this PR?

Configuring the new Database properties camunda.database.* used in v2 stack. These properties are added to the configmaps used by:

• operate deployment
• tasklist deployment
• zeebe gateway deployment
• zeebe statefulset

The new properties use the same values as the existing ones (like camunda.tasklist.elasticsearch ...) . The old properties are meant to be deprecated and removed in future releases

Relates to https://github.com/camunda/camunda/issues/19076

Checklist

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