fix(sample): add all project files

sample/01-complete-app/src/greeter/greeter.module.ts

@@ -0,0 +1,7 @@
+import { Module } from '@nestjs/common';
+import { GreeterUpdate } from './greeter.update';
+
+@Module({
+  providers: [GreeterUpdate],
+})
+export class GreeterModule {}

sample/01-complete-app/src/greeter/greeter.update.ts

@@ -0,0 +1,16 @@
+import { Hears, Start, Update } from '../../../../lib';
+import { Context } from '../interfaces/context.interface';
+
+@Update()
+export class GreeterUpdate {
+  @Start()
+  async onStart(ctx: Context): Promise<void> {
+    await ctx.reply('Say hello to me');
+  }
+
+  @Hears(['hi', 'hello', 'hey', 'qq'])
+  async onGreetings(ctx: Context): Promise<void> {
+    const { first_name } = ctx.from;
+    await ctx.reply(`Hey ${first_name}`);
+  }
+}