feat: add helm chart

[stevefan1999-personal]

Describe your changes

Related Issues / Projects

Checklist

• Get official Docker repo and image
• Find a way to integrate go-migrate because it fits well with init container (which is done by Gitea Helm chart)
• Fix all the shit template
• Make sure that the chart values README are generated (that means documenting the values)
• Deploy a test pipeline using vcluster
• Get a Github page to publish the charts (that means adding the chart-releaser action)

[cmyui]

Hey, this is neat the work you've done here but I don't think this is particularly useful for most users of b.py - at least in it's current state - I think it would make most sense as a repo you build as a fork of this project.

I think there are quite a few roadblocks before b.py will be worthy of throwing on k8s - notably making it fully stateless

I'd be open to making an official helm chart in the future when the time is appropriate & the project is in the right state for it - but not sure if it should even live in this repo (it's already quite bloated imo)

Ty for the PR!

[cmyui]

I think there are quite a few roadblocks before b.py will be worthy of throwing on k8s - notably making it fully stateless

made a ticket for this for @tsunyoku and i

• Make the application stateless - all persistent state outsourced to redis/sql #506