add: repair game inspection sub state

src/hooks/gameplay/useRepairMissionStep.ts

@@ -0,0 +1,9 @@
+import type {
+  MissionStep,
+  RepairMissionId,
+} from "@/managers/stores/useGameStore";
+import { useGameStore } from "@/managers/stores/useGameStore";
+
+export function useRepairMissionStep(mission: RepairMissionId): MissionStep {
+  return useGameStore((state) => state[mission].currentStep);
+}