feat(connector): add health.incidents

[Gabrielpanga]

Mirrors the field now returned by the API: the incidents affecting a connector right now.

@Data
@Builder
public class Health {
  ConnectorStatus status;
  String stage;
  List<ConnectorIncident> incidents;   // new
}

Each incident carries a customer-facing title, a type, the affected product, severity, state, startedAt and a url permalink to the status page.

incidents is null when the connector has no active incident, so its presence is the signal. It describes the institution, not the caller's own connections — status says whether you can connect at all, this says what is wrong, and a bank can be perfectly reachable while failing to return instalments.

Two modelling choices

type is an enum, following the ConnectorStatus pattern in this package — @SerializedName per value, Lombok @Getter on the backing string. A value added server-side after this release deserializes as null under Gson, which is honest. Note OTHER is a real value meaning Pluggy has not classified the incident, not that nothing is wrong.

product stays a String. Its values include pis-agendado, and an unrecognised one would deserialize to null — worse than just handing back the raw string.

Verification

mvn -o compile from a cleared target/classes: 114 source files, BUILD SUCCESS.

Context: the API side shipped in v0.695.0. Same change in pluggyai/pluggy-node#179 and pluggyai/pluggy-net#43.