feat: add api liveness and readiness checks

backend/apps/api/src/health/health.module.ts

@@ -0,0 +1,14 @@
+import { Module } from '@nestjs/common';
+import {
+  PostgresModule,
+  RedisModule,
+} from '../../../../libs/infrastructure/src';
+import { HealthController } from './health.controller';
+import { ReadinessService } from './readiness.service';
+
+@Module({
+  imports: [PostgresModule, RedisModule],
+  controllers: [HealthController],
+  providers: [ReadinessService],
+})
+export class HealthModule {}