Refactor loki into wrapper pattern like alloy and mimir

In order to make chart maintenance simple, we should refactor this chart into a wrapper chart that includes the upstream chart as a dependency.

Acceptance Criteria:

• Chart is a wrapper to the upstream loki chart
• All additional templates remain
• Custom changes to templates added to the HelmRelease a postrender as json patches
• BigBang values.yaml templates updated
• pacakge upgrades without intervention (it should)

added loki statusgrooming teamObservability labels

we make a lot of custom changes to this chart, is this feasible/worth the effort to put all that in post renders?

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@kscheunemann this issue has been inactive for 30 days and is being labelled as stale. If this issue is still required please take action by removing the stale label and commenting with an update, status, or justification. If this issue is not required please close it or label it as delete-me. If no action is taken this issue will be auto closed in 60 days.

added stale label