Add helm and k8s manifests

[MMolineux]

Create production helm chart for OTS deployments:

• OTS Server
• EUD Handler
• CoT Parser

Infrastructure deployments are out-of-scope.

[ArsalanAnwer0]

Hi, can I help with this?

[MMolineux]

Thanks for the interest, but this is just a fork of the main OpenTakServer repo. If you wanna help to add in helm, might be best on the main repo.

Take a look at this PR on the main OTS repo (brian7704#121), they may need some help?

With this fork, I'm really just adding some changes specific to my personal deployment setup. I do plan to contribute some of the changes back to the main repo though.