feat: add observedgeneration to all crds

[sandert-k8s]

Pre work for projectcapsule/capsule#1924

Add observedGeneration to the status of all objects. ArgoCD best practices is to check observedGeneration vs Generation in a spec. If that differs, the application will report "Progressing".
Also added controllers for (global)ProxySettings, since they didn't have them yet.

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

This PR adds status.observedGeneration tracking for GlobalProxySettings and ProxySetting, including controllers to keep the field updated and new/updated e2e tests to validate the behavior.

Changes:

• Add status types + kubebuilder status subresource markers for both CRDs.
• Introduce two lightweight reconcilers that update status.observedGeneration.
• Add e2e coverage verifying observedGeneration is set and updated after spec changes.

Reviewed changes

Copilot reviewed 10 out of 11 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
main.go	Registers new observedGeneration controllers with the manager.
internal/modules/priorityclass/utils.go	Removes a //nolint:staticcheck directive near regex compilation.
internal/controllers/proxy_setting.go	New controller to update ProxySetting.status.observedGeneration.
internal/controllers/global_proxy_settings.go	New controller to update GlobalProxySettings.status.observedGeneration.
e2e/observed_generation_test.go	New e2e suite covering observedGeneration behavior for both resources.
e2e/global_settings_test.go	Extends existing e2e test to assert observedGeneration is set.
charts/capsule-proxy/crds/capsule.clastix.io_proxysettings.yaml	Adds status schema + enables /status subresource.
charts/capsule-proxy/crds/capsule.clastix.io_globalproxysettings.yaml	Adds status schema (but currently missing /status subresource).
api/v1beta1/proxysettings_types.go	Adds ProxySettingStatus + status field and status subresource marker.
api/v1beta1/globalproxysettings_types.go	Adds GlobalProxySettingsStatus + status field.

Files not reviewed (1)

• api/v1beta1/zz_generated.deepcopy.go: Language not supported

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