feat(manager/helm-values): add image support in helm values manager

[KyriosGN0]

Changes

This PR adds the image as viable option in helm-values manager as some charts use image and not repository in the values.yaml

Context

Some of our internal charts use image instead of repository

Documentation (please check one with an [x])

• [X] I have updated the documentation, or
• [ ] No documentation update is required

How I've tested my work (please select one)

I have verified these changes via:

• [ ] Code inspection only, or
• [ ] Newly added/modified unit tests, or
• [X] No unit tests but ran on a real repository, or
• [ ] Both unit tests + ran on a real repository