fix(repository): Move backend code into subdirectory

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

backend/src/auth/auth.module.ts

@@ -0,0 +1,26 @@
+/*
+ * SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+import { Module } from '@nestjs/common';
+import { PassportModule } from '@nestjs/passport';
+import { TypeOrmModule } from '@nestjs/typeorm';
+
+import { LoggerModule } from '../logger/logger.module';
+import { UsersModule } from '../users/users.module';
+import { AuthToken } from './auth-token.entity';
+import { AuthService } from './auth.service';
+import { TokenStrategy } from './token.strategy';
+
+@Module({
+  imports: [
+    UsersModule,
+    PassportModule,
+    LoggerModule,
+    TypeOrmModule.forFeature([AuthToken]),
+  ],
+  providers: [AuthService, TokenStrategy],
+  exports: [AuthService],
+})
+export class AuthModule {}