feat(gateway): CommandRegistryService + CommandExecutorService (P8-010) (#178)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

apps/gateway/src/commands/commands.module.ts

@@ -0,0 +1,9 @@
+import { Module } from '@nestjs/common';
+import { CommandRegistryService } from './command-registry.service.js';
+import { CommandExecutorService } from './command-executor.service.js';
+
+@Module({
+  providers: [CommandRegistryService, CommandExecutorService],
+  exports: [CommandRegistryService, CommandExecutorService],
+})
+export class CommandsModule {}