Confluent Plugin

[ameijer]

Is your feature request related to a problem? Please describe.
Write a Confluent plugin for OpenCost Plugins

Additional context
Costs for Confluent can be access via API documented here: https://docs.confluent.io/cloud/current/api.html#tag/Costs-(billingv1)

Example PR with an implemented Plugin: #41
This issue qualifies for our bounty program, read more details here: https://www.opencost.io/blog/introducing-opencost-plugins

[KingParmenides]

Submitted a Confluent billing plugin for this bounty: #72

It implements the billing/v1/costs API with daily Custom Cost windows, Basic Auth, pagination, config validation, README docs, mocked tests, and build verification.

Bounty payout address: BTC 39Q34P8A7g375yqEr8buvNJkUbRgKfbKQZ