The comment specifying that the `chart` field could be omitted when
referencing an OCI chart might mislead readers into thinking that
non-empty values would still be allowed.
* Add notes on HelmOps status
HelmOps have their own status fields, with information propagated from
various sources.
* Update resources lists
Resource keys no longer appear in bundles, yet both GitRepos and HelmOps
now share resources lists sourced from bundle deployments.
* Document semantic versioning for HelmOps
That the HelmOp version field now supports semver constraints, which
this documents with links to the spec and to examples of how such
constraints are written and parsed.
* Document polling for HelmOps
The new polling feature for HelmOps is now documented, for users to know
how to enable it and what to expect when it is enabled.
* Clarify HelmOps vs HelmOp
Feedback suggested that the distinction between HelmOps as an idea, and
`HelmOp` as a resource, needed to be expanded upon. This is an attempt
in that direction.
Corentin Néau