[feature] application hooks

[ipaqsa]

It provides ApplicationHookInput with NamespacedObjectPatchCollector and ApplicationDependencyContainer

[Copilot]

Pull request overview

This pull request introduces support for application hooks alongside existing module hooks, implementing a generic hook system using Go generics. The main additions include ApplicationHookInput with namespace-scoped operations via NamespacedPatchCollector, and a dedicated ApplicationDependencyContainer interface.

Changes:

• Introduced generic Hook[T Input] type supporting both module and application hooks
• Added ApplicationHookInput with Instance interface for application context and NamespacedPatchCollector for namespace-scoped Kubernetes operations
• Refactored internal architecture with new executor abstraction layer (moduleExecutor and applicationExecutor)

Reviewed changes

Copilot reviewed 33 out of 35 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
pkg/hook.go	Introduced generic Hook type with ApplicationHookInput and Instance interface
pkg/dependency.go	Added ApplicationDependencyContainer interface (subset of DependencyContainer)
pkg/patch.go	Added NamespacedPatchCollector interface and removed deprecated type aliases
pkg/registry/registry.go	Refactored to support generic hook registration with type-based routing
internal/executor/*.go	New executor abstraction with separate module and application implementations
internal/objectpatch/*.go	Implemented PatchCollector and NamespacedPatchCollector with operation types
internal/controller/controller.go	Updated to use executor registry instead of direct hook registry
examples/single-file-app-example/	New example demonstrating application hook usage

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