refactor: remove KfCluster functionality and related code

[uzaxirr]

No description provided.

[Copilot]

Pull Request Overview

This PR removes all KFCluster-related functionality and command registrations from the codebase. The key changes include:

• Removing the KFCluster case from the SizeType function in utility/kubernetes.go
• Removing the KFCluster command registration from cmd/root.go
• Deleting the entire KFCluster command implementation files from the cmd/kfcluster directory

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated no comments.

File	Description
utility/kubernetes.go	Removed the KFCluster size-case from the SizeType function
cmd/root.go	Removed the KFCluster command import and registration
cmd/kfcluster/*	Deleted all KFCluster-related command files (create, update, list, delete, size, and the package root)

Comments suppressed due to low confidence (3)

utility/kubernetes.go:297

• Removal of the '.kf.' case from SizeType is intentional; please confirm that downstream code does not rely on receiving a 'KfCluster' value.

case strings.Contains(size, ".kf."):

cmd/root.go:13

• The KFCluster command registration has been removed; ensure related documentation and migration guides are updated accordingly.

rootCmd.AddCommand(kfcluster.KFClusterCmd)

cmd/kfcluster/kfcluster.go:1

• The complete removal of the kfcluster package files is consistent with the refactor; please verify that any dependent tests or configuration references have also been updated or removed.

// Package kfcluster is the root command for Civo KFCluster