refactor nest app to server folder

server/src/entity/user-group.ts

@@ -0,0 +1,21 @@
+import {
+  Entity,
+  PrimaryGeneratedColumn,
+  Column,
+  ManyToMany,
+  JoinTable,
+} from 'typeorm';
+import { UserRole } from './user-role';
+
+@Entity()
+export class UserGroup {
+  @PrimaryGeneratedColumn()
+  id: number;
+
+  @Column({ unique: true })
+  name: string;
+
+  @ManyToMany(() => UserRole)
+  @JoinTable()
+  roles: UserRole[];
+}

server/src/entity/user-role.ts

@@ -0,0 +1,10 @@
+import { Entity, PrimaryGeneratedColumn, Column } from 'typeorm';
+
+@Entity()
+export class UserRole {
+  @PrimaryGeneratedColumn()
+  id: number;
+
+  @Column({ unique: true })
+  name: string;
+}

server/src/entity/user.ts

@@ -0,0 +1,27 @@
+import {
+  Entity,
+  Column,
+  PrimaryGeneratedColumn,
+  ManyToMany,
+  JoinTable,
+} from 'typeorm';
+import { UserGroup } from './user-group';
+
+@Entity()
+export class User {
+  @PrimaryGeneratedColumn()
+  id: number;
+
+  @Column()
+  username: string;
+
+  @Column()
+  email: string;
+
+  @Column()
+  password: string;
+
+  @ManyToMany(() => UserGroup)
+  @JoinTable()
+  groups: UserGroup[];
+}