OpenAI /v1/usage & /v1/organization/usage — CloudWatch

[JGoutin]

Implement OpenAI-compatible usage and analytics endpoints backed by Amazon CloudWatch metrics.

• GET /v1/usage
• GET /v1/organization/usage

REF:

• https://platform.openai.com/docs/api-reference/usage
• https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/WhatIsCloudWatch.html