Adding Advisor and Resource Graph recommendations exports to Hubs

[helderpinto]

🛠️ Description

This is the first PR in a series of PRs that will add Advisor and Resource Graph recommendations exports to Hubs. This PR includes the initial Advisor/ARG recommendations export and the schema for recommendations. It is compatible with Data Explorer ingestion. For this PR, we also fixed Western Europe timezones.

The upcoming PRs will address documentation, reporting, and granting permissions to the ADF identity at a higher scope, for the recommendations exports to succeed. Currently, Reader permissions have to be granted manually at the subscription or management group level.

📋 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?

• ✅ Updated changelog (required for dev PRs)
• ➡️ Will add log in a future PR (feature branch PRs only)
• ❎ Log not needed (small/internal change)

📖 Did you update documentation?

• ✅ Public docs in docs (required for dev)
• ✅ Internal dev docs in src (required for dev)
• ➡️ Will add docs in a future PR (feature branch PRs only)
• ❎ Docs not needed (small/internal change)

[helderpinto]

@flanakin, the ADF pipeline was refactored to become query type-agnostic. It is now prepared to deal with other query types in the future. There are still some unresolved conversations. Feel free to ping me offline or let's set up a meeting to discuss this further.