Extensions: Enabled on `make run`

[adam-cattermole]

Is your feature request related to a problem? Please describe. We had to disable the extensions when running locally with make run https://github.com/Kuadrant/kuadrant-operator/pull/1422.

Describe the solution you'd like

• [ ] The local build process should (conditionally) build the extensions also
• [ ] The context from main (ctrl.SetupSignalHandler) should be passed into the extensions manager, perhaps through the PolicyMachineryController
• [ ] We can then try to ensure the extensions are cancelled when the context is cancelled using CommandContext