🩹 fix: the scale functionality of self managed cluster

[dipankardas011]

🗒️ Changelog

• added the missing ksctl scale up and down logic
• now it will show users by how much their cost will change

🏋🏼 Issues

✅ Completed Issues

• Fixes: [Bug]: Not enough user level information when ksctl cluster scaleup/scaledown and not a working solution #48
• ksctl/ksctl@8d236df

🚀 Task List

• [ ]
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🔍 Review Checklist

• Code follows project style guidelines
• Added/updated tests
• Ran tests locally
• Updated documentation
• Checked Contribution Guidelines

📸 Screenshots/Recordings

📌 Additional Notes

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💡 PR best practices

• Keep changes focused and atomic
• Update tests and documentation
• Check for conflicts with main branch
• Respond promptly to review comments
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