feat: implement game API with TRPC and Redis transport

- Added GameApiConfig interface and configuration resolver from environment variables.
- Created GameApiContext for managing database and transport dependencies.
- Implemented InMemoryTurnDaemonTransport for testing purposes.
- Developed RedisTurnDaemonTransport for command and status handling via Redis streams.
- Defined TurnDaemonStreamKeys for namespacing Redis streams by profile.
- Established TRPC router with endpoints for health check, world state retrieval, and turn daemon commands (run, pause, resume, status).
- Integrated Fastify server with TRPC and Redis transport.
- Added unit tests for router functionality and stream key generation.
- Configured Vitest for testing environment.

app/game-api/vitest.config.ts

@@ -0,0 +1,17 @@
+import path from 'node:path';
+
+import { defineConfig } from 'vitest/config';
+import tsconfigPaths from 'vite-tsconfig-paths';
+
+export default defineConfig({
+    plugins: [
+        tsconfigPaths({
+            projects: [path.resolve(__dirname, '../../tsconfig.paths.json')],
+        }),
+    ],
+    test: {
+        environment: 'node',
+        globals: true,
+        include: ['test/**/*.test.ts'],
+    },
+});