Add KonnectExtension capabilities to the ControlPlane

[mlavacca]

Problem Statement

So far, the KonnectExtension has been exclusively used with DataPlane. We need to provide the same functionality for ControlPlanes.

Proposed Solution

• In the ControlPlane controller, add a logic very similar to what we already have In the DataPlane one to customize the underlying deployment with the Konnect-related configuration bits.
• A check must be performed: in case the KonnectExtension is not of type K8SIngressController the attachment must fail and the KonnectExtensionApplied condition must be set accordingly. We may need to introduce a new reason to highlight this kind of problem.

Acceptance Criteria

• As a user, I can attach a KonnectExtension to a ControlPlane resource.

[randmonkey]

Blocked by #1145

[mlavacca]

Unblocked