Allow deleting multiple datasets via CLI

[gordonwatts]

Summary

• enable deleting multiple datasets in one command
• test dataset delete with multiple IDs

Testing

• flake8 servicex/app/datasets.py tests/app/test_datasets.py
• pytest

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https://chatgpt.com/codex/tasks/task_e_68b489a8323c8320b6d6a1adb885798a

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.21%. Comparing base (62b479f) to head (f16eca6).
⚠️ Report is 13 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #656   +/-   ##
=======================================
  Coverage   97.20%   97.21%           
=======================================
  Files          29       29           
  Lines        1969     1973    +4     
=======================================
+ Hits         1914     1918    +4     
  Misses         55       55           

Flag	Coverage Δ
unittests	97.21% <100.00%> (+<0.01%)	⬆️

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[Copilot]

Pull Request Overview

This PR enables deleting multiple datasets in a single CLI command instead of requiring separate commands for each dataset. The change allows users to pass multiple dataset IDs as arguments to the delete command and provides appropriate error handling when some datasets are not found.

• Modified the CLI delete command to accept multiple dataset IDs as arguments
• Updated error handling to track and report when any datasets are not found
• Enhanced test coverage to verify multi-dataset deletion scenarios

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
servicex/app/datasets.py	Updated delete command to accept multiple dataset IDs and iterate through them with proper error tracking
tests/app/test_datasets.py	Enhanced test cases to verify multi-dataset deletion functionality and mixed success/failure scenarios

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[gordonwatts]

Allow deleting of multiple datasets at once from the cli