Adding documentation for the edge endpoints. Also separating request and
response schema for our validate endpoint to make clear that we expect a
list of strings as input, but yield tokens as output.
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Co-authored-by: Gastón Fournier <gaston@getunleash.io>
Co-authored-by: Thomas Heartman <thomas@getunleash.ai>
### What
Change /edge/metrics endpoint to accept list of ClientMetricsEnv
### Rationale
We originally made the assumption that we probably didn't need to keep
splitting from a map of features into ClientMetricsEnv for bulk, instead
the bulk poster could post ClientMetricsEnv directly. However, Unleash
still expected the old client metrics format with a dictionary of
featurename -> metricsForFeature. This PR changes that to now accept the
list of ClientMetricsEnv (preprocessed data from downstream) instead of
expecting metrics to be in the old single application metric format.
