Add registration

packages/backend/src/routes/users/users.controller.ts

@@ -0,0 +1,15 @@
+import { Body, Controller, Post } from '@nestjs/common';
+import { UsersService } from './users.service';
+import { CreateUserAccountDto } from 'src/dto/CreateUserAccount.dto';
+
+@Controller('/users')
+export class UsersController {
+  constructor(private readonly usersService: UsersService) {}
+
+  @Post('/')
+  async createUserAccount(
+    @Body() { email, password, username }: CreateUserAccountDto,
+  ) {
+    return await this.usersService.createUserAccount(email, password, username);
+  }
+}