[home-assistant] adding home-assistant helm chart

[billimek]

Special notes for your reviewer:

Importing home-assistant chart from the helm/charts repo, to handle deprecation.

Checklist

[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]

• [x] Chart Version bumped
• [x] Variables are documented in the README.md
• [x] Title of the PR starts with chart name (e.g. [radarr])