[Feature] - Allow to override resource names

**Is your feature request related to a problem? Please describe.**
I want to be able to inject a name for the services and the statefulset in order to be able to reuse these names in dependant charts.

**Describe the solution you'd like**
Add values `serviceNameOverride` `headlessServiceNameOverride` and `statefulsetNameOverride` taken into account in the resource's names helpers.

**Describe alternatives you've considered**
None

**Additional context**
None

Start by locating the chart values and the resource-name helpers used for Services and the StatefulSet. Trace how those helpers currently derive names, then verify rendered chart manifests for the service, headless service, and StatefulSet with each override configured. Done means all three values control the corresponding resource names without changing defaults.

Written by the indexing model from the issue text.