Add Helm chart

[karlnewell]

Initial helm chart, needs some work.
TLS isn't working properly.
Updating the NEO4J DB needs some work.
Documentation needed - especially for DB update procedure.

Description

Adds Helm chart to install a Neo4j server using persistent storage. Configures Services and Ingress. Downloads an IYP dump as defined in a values.yaml file and loads the dump. Has a rudimentary procedure for updating to the latest dump. This process needs some work.
TLS is not working yet. There are a handful of knobs in Neo4j that need to match in order to get TLS working.

Motivation and Context

Provides a Helm chart to install IYP and dependencies on a Kubernetes cluster. This should make it easier for people running kubernetes to run a local instance of IYP.

How Has This Been Tested?

This is currently being used in a test environment. I can provide details and access if requested.

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.