[ENH] Add route for fetching available versions of a pipeline across n-APIs

[alyssadai]

• Closes Create new endpoint to return pipeline vers. for specific pipeline name for query tool #117

Changes proposed in this pull request:

• Added new router /pipelines with a /{pipeline_term}/versions subpath that sends a federated request to all n-APIs for available versions of the specified pipeline
• Removed extraneous query params (currently ignored by the n-API) in the URL used to send requests to the current /attributes endpoint of n-APIs

Checklist

This section is for the PR reviewer

• PR has an interpretable title with a prefix ([ENH], [FIX], [REF], [TST], [CI], [MNT], [INF], [MODEL], [DOC]) (see our Contributing Guidelines for more info)
• PR has a label for the release changelog or skip-release (to be applied by maintainers only)
• PR links to GitHub issue with mention Closes #XXXX
• Tests pass
• Checks pass

For new features:

• Tests have been added

For bug fixes:

• There is at least one test that would fail under the original bug conditions.

[coveralls]

Pull Request Test Coverage Report for Build 11392244268

Details

• 37 of 40 (92.5%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.3%) to 96.708%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
app/api/routers/pipelines.py	10	11	90.91%
app/api/crud.py	10	12	83.33%

Totals
Change from base Build 11350110286:	-0.3%
Covered Lines:	617
Relevant Lines:	638

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💛 - Coveralls

[surchs]

thanks @alyssadai, looks very nice and clean

🧑‍🍳

[neurobagel-bot]

🚀 PR was released in v0.4.0 🚀