FX2024 Domain & Capabilities update / Optimize Cloud Usage domain

[arthurclares]

🛠️ Description

This PR updates all the existing capabilities that are part of the optimize cloud usage domain according to the new FinOps framework.

It does not contain any new capability. This PR only covers what needs to be renamed and removed. New capabilities will be covered by a future PR.

📋 Checklist

🔬 How did you test this change?

• [ ] 🤏 Lint tests
• [ ] 🤞 PS -WhatIf / az validate
• [ ] 👍 Manually deployed + verified
• [ ] 💪 Unit tests
• [ ] 🙌 Integration tests

🙋‍♀️ Do any of the following that apply?

• [ ] 🚨 This is a breaking change.
• [ ] 🤏 The change is less than 20 lines of code.

📑 Did you update docs/changelog.md?

• [ ] ✅ Yes (required for dev PRs)
• [x] ➡️ Will cover in a future PR (feature branch PRs only)
• [ ] ❎ Not needed (small/internal change)

📖 Did you update documentation?

• [x] ✅ Public docs in docs (required for dev)
• [ ] ✅ Internal dev docs in src (required for dev)
• [ ] ➡️ Will cover in a future PR (feature branch PRs only)
• [ ] ❎ Not needed (small/internal change)