[zerotier] New chart for zerotier network

[mabels]

Description of the change

Added a new Chart to enable ZeroTier Networking

Benefits

You could do in future hopefully helm install zerotier k8s-at-home/zerotier

Possible drawbacks

I don't know --- keep in mind hostNetwork is default true!

Applicable issues

unknown

• fixes #

no

Checklist

• [ x] Title of the PR starts with chart name (e.g. [home-assistant])
• [ x] Chart version bumped in Chart.yaml according to semver.
• [ x] Chart artifacthub.io/changes changelog annotation has been updated in Chart.yaml. See Artifact Hub documentation for more info.
• [ x] Variables have been documented in the values.yaml file.

[truxnell]

@mabels looks like theres still some linting to fix & the new image tag cant be pulled.