chore: break up cns main.go

[pjohnst5]

Continuing the efforts of #3465 in breaking up cns main.go
Similarly, no code changes, just re-arranging a bit into own files

[Copilot]

Pull Request Overview

This PR continues the refactoring effort to break up the large main.go file in the CNS service by extracting code into separate, focused files without making any functional changes.

• Extracts version-related functionality into a dedicated version.go file
• Moves command-line argument definitions to args.go for better organization
• Separates node registration and managed mode functionality into managed.go
• Creates aks.go for AKS-specific initialization flows including CRD state management and multi-tenant controller setup

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
cns/service/version.go	Contains version variable and printVersion function
cns/service/managed.go	Node registration logic and interfaces for managed DNC mode
cns/service/main.go	Cleaned up by removing extracted code and updating function calls
cns/service/args.go	Command-line argument definitions moved from main.go
cns/service/aks.go	AKS-specific initialization including CRD controllers and multi-tenant setup

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[pjohnst5]

/azp run Azure Container Networking PR

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[pjohnst5]

/azp run Azure Container Networking PR

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[pjohnst5]

G'day @rbtr , looks like this passed in the pipeline
Would you be able to review it?
It's basically the same as yours, I rebased it and moved 4 more things (which I'm happy to undo any if need be)

[pjohnst5]

We're going to go slow on this one, I'm going to open a new PR to first merge in args.go and version.go (safe, small stuff first)