feat: status api

internal/model/game/ship.go

@@ -122,6 +122,11 @@ func (g Game) deleteShipTypeInternal(ri int, name string) error {
 	}); pl >= 0 {
 		return e.NewDeleteShipTypePlanetProductionError(g.Map.Planet[pl].Name)
 	}
+	for sg := range g.listShipGroups(ri) {
+		if sg.TypeID == g.Race[ri].ShipTypes[st].ID {
+			return e.NewDeleteShipTypeExistingGroupError("group: %v", sg.Index)
+		}
+	}
 	g.Race[ri].ShipTypes = append(g.Race[ri].ShipTypes[:st], g.Race[ri].ShipTypes[st+1:]...)
 	return nil
 }

internal/model/rest/status.go

@@ -0,0 +1,6 @@
+package rest
+
+type Status struct {
+	Turn    uint `json:"turn"`
+	Players int  `json:"players"`
+}