fix!: Change the type of the `segments` field in `LookupForecastMinutesResponse` from `PrecipitationSegments` to `PrecipitationSegment`
feat: Add the new message `PrecipitationSegment`
feat: Add `PrecipitationIntensity` enum and `intensity` field to `PrecipitationSegment`
BREAKING CHANGE: The message `PrecipitationSegments` has been removed. The `segments` field in `LookupForecastMinutesResponse` has changed its type from the removed `PrecipitationSegments` to the new message `PrecipitationSegment`. Consumers must update their code to use `PrecipitationSegment`.
PiperOrigin-RevId: 908005286