* add prometheus metrics endpoints via helper package
* model server specific requirements
* mark as public endpoint
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Co-authored-by: Richard Kuo (Onyx) <rkuo@onyx.app>
* rename agent test script to prevent pytest autodiscovery
* first cut
* fix log message
* fix up typing
* add a sample test
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Co-authored-by: Richard Kuo (Danswer) <rkuo@onyx.app>