Fix databricks entry point

[DimedS]

Motivation and Context

To deploy kedro projects in Databricks, we need to use specific entry point, our manual using databricks_run name and in starter we put special code in databricks_run.py file. This PR changes common entry point pattern used in all starters to specific for Databricks:
databricks_run = "{{ cookiecutter.python_package }}.databricks_run:main"

How has this been tested?

The new entry point configuration has been tested manually on Databricks.
Deployment was made using Databricks job, following this manual

Checklist

• Opened this PR as a 'Draft Pull Request' if it is work-in-progress
• Assigned myself to the PR
• Added tests to cover my changes

[noklam]

https://docs.kedro.org/en/stable/deployment/databricks/databricks_deployment_workflow.html#configure-the-job

Thanks, this match the instruction in the docs.

[merelcht]

👍