feat(battle-sim): implement battle simulation logic and metrics tracking

- Added WarBattleMetrics interface to track attacker and defender skills during battles.
- Enhanced WarUnit class with method to log activated skills.
- Introduced environment setup for battle simulation, including unit set loading and configuration resolution.
- Developed in-memory and Redis transport layers for handling battle simulation requests and results.
- Created types and interfaces for battle simulation payloads and responses.
- Implemented battle simulation processing logic, including logging and skill tracking.
- Added tests for battle simulation processor to ensure functionality and correctness.

app/game-api/src/battleSim/transport.ts

@@ -0,0 +1,6 @@
+import type { BattleSimJobPayload, BattleSimResultPayload, BattleSimTransportResponse } from './types.js';
+
+export interface BattleSimTransport {
+    simulate(payload: BattleSimJobPayload): Promise<BattleSimTransportResponse>;
+    getSimulationResult(jobId: string): Promise<BattleSimResultPayload | null>;
+}