Add new labels to the managed resources

[LionelJouin]

Is your feature request related to a problem? Please describe.

Adding new labels to the resources will help for troubleshooting to select the pods that are managed by Meridio, a specific custom resource, or that belongs to the trench/conduit/attractor.

Describe the solution you'd like

Here are the labels we could add to the resources:

On every pods

• Meridio/Type
  • stateless-lb-frontend
  • proxy
  • ipam
  • nsp
  • operator
  • nse-vlan

On every resources (ownerReferences also exists):

• Meridio/Owner
  • cr-name
• Meridio/Owner-Type
  • Trench
  • Conduit
  • Attractor

On every Trench resources:

• Meridio/Trench
  • trench-name

On every Attractor resources:

• Meridio/Attractor
  • attractor-name

On every Conduit resources:

• Meridio/Conduit
  • conduit-name

Describe alternatives you've considered
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Additional context
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