### Preflight Checklist - [x] I have searched the [issue tracker](https://www.github.com/openmeterio/openmeter/issues) for an issue that matches the one I want to file, without success. ### Problem Description Currently MAX & Average aggregations are not supported for Features & Entitlements. We would like to use these aggregations within the time-window of billing, say DAY or MONTH as a value to calculate cost and entitlement status ### Proposed Solution Support both types within Features & Entitlements ### Alternatives Considered _No response_ ### Additional Information _No response_