Fix rate limiting issues with Power BI admin APIs

[mars-lan]

🤔 Why?

Most of the Power BI Admin APIs have a rate limit of 200 requests/hour. We reach the limit quickly when crawling a large number of workspaces.

🤓 What?

Replace the following per-workspace API calls with global API calls. These global APIs appear to be equivalent and are able to scale to thousands of items without any issues.

• GetDatasetsInGroupAsAdmin => GetDatasetsAsAdmin
• GetReportsInGroupAsAdmin => GetReportsAsAdmin
• GetDashboardsInGroupAsAdmin => GetDashboardsAsAdmin

Unfortunately, there is no global version of GetTilesAsAdmin, so we need to fallback to the non-admin version Get Tiles In Group. This would require the service principal to be added to each workspace, which is already a requirement for getting refresh schedule, data sources, etc.

🧪 Tested?

Verified the before/after MCE against production instances.

☑️ Checks

• My PR contains actual code changes, and I have updated the version number in pyproject.toml.

[github-actions]

☂️ Python Coverage

current status: ✅

Overall Coverage

Lines	Covered	Coverage	Threshold	Status
13448	12038	90%	85%	🟢

New Files

No new covered files...

Modified Files

File	Coverage	Status
metaphor/power_bi/extractor.py	89%	🟢
metaphor/power_bi/power_bi_client.py	68%	🟢
TOTAL	78%	🟢

updated for commit: b4cef52 by action🐍

[codecov]

Codecov Report

Attention: Patch coverage is 60.86957% with 9 lines in your changes missing coverage. Please review.

Project coverage is 89.51%. Comparing base (db596ce) to head (b4cef52).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
metaphor/power_bi/power_bi_client.py	30.76%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1045      +/-   ##
==========================================
- Coverage   89.51%   89.51%   -0.01%     
==========================================
  Files         211      211              
  Lines       13449    13448       -1     
==========================================
- Hits        12039    12038       -1     
  Misses       1410     1410              

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[alyiwang]

LGTM