Add deprecation warning for microsoftGraph builtin extension

[jason-dou]

Adding a deprecation warning for microsoftGraph builtin extension. Users should use dynamic types instead.

Microsoft Reviewers: Open in CodeFlow

[github-actions]

Test this change out locally with the following install scripts (Action run 11078340626)

VSCode

• Mac/Linux

  bash <(curl -Ls https://aka.ms/bicep/nightly-vsix.sh) --run-id 11078340626

• Windows

  iex "& { $(irm https://aka.ms/bicep/nightly-vsix.ps1) } -RunId 11078340626"

Azure CLI

• Mac/Linux

  bash <(curl -Ls https://aka.ms/bicep/nightly-cli.sh) --run-id 11078340626

• Windows

  iex "& { $(irm https://aka.ms/bicep/nightly-cli.ps1) } -RunId 11078340626"

[github-actions]

Dotnet Test Results

    72 files   -     36      72 suites   - 36   25m 45s ⏱️ - 10m 24s
11 071 tests  -     25  11 071 ✅  -     25  0 💤 ±0  0 ❌ ±0 
25 907 runs   - 12 949  25 907 ✅  - 12 949  0 💤 ±0  0 ❌ ±0 

Results for commit aa5e48b. ± Comparison against base commit 02f6ec3.

[alex-frankel]

Can we have an auto-fix to move users to the new format? I worry ppl might get tripped up on the transition.