Helm Chart for runtime-class-manager

[voigt]

A Helm Chart should be provided to simplify the installation of runtime-class-manager.

As spinkube will eventually depend on it, we should add reasonable defaults, as the rcm helm-chart will be used as a Helm dependency.

I assume that we can use a lot of inspiration from the existing Kwasm helm chart.

[flavio]

I can take this one. Are you fine with me copying and adapting the helm charts we used to have inside of the kwasm project?

[voigt]

Sure, As a starting point, this is probably the best you can do :)

If I remember correctly there are a couple of envvars configurable, which are not (yet) configurable in rcm. So probably this is something we need to take care of/create follow up issue.

[vdice]

Added in #204.