Merge pull request BerriAI#3652 from BerriAI/litellm_end_user_cost_tr…

…acking

feat(proxy_server.py): new `/end_user/info` endpoint

ui - new build

Merge pull request BerriAI#3664 from BerriAI/litellm_revert_3600

[Fix] Revert BerriAI#3600 BerriAI#3600

(ci/cd) run again

docs - slack alerting

ui - new build

fix(openai.py): creat MistralConfig with response_format mapping for …

…mistral api

fix(utils.py): fix vertex ai function calling + streaming

Completes BerriAI#3147

refactor(main.py): trigger new build

refactor(main.py): trigger new build