Outline and document guidelines around formats for version number in version control tags and package repositories

**Is your feature request related to a problem? Please describe.**
Not quite, but it's around consistency of how we label things. For examples I noticed that we have been using `v` prefixed labels when we tagged projects on Github but not prefixed when we published packages on the container registry.

**Describe the solution you'd like**
Our projects use SemVer, and everyone is closely aligned with how that works. We should write out a guide that outlines our policy of prefixing tags on:
- Container registry
- Version control systems (e.g Github)

**Describe alternatives you've considered**
NA

**Additional context**
I published a package on a repository with a prefix and the charts don't reference the prefix and hence had installation issues on EKS.