feat: add CryptoModule to app imports

backend/src/app.module.ts

@@ -3,9 +3,12 @@ import { AppController } from "./app.controller";
 import { AppService } from "./app.service";
 import {DatabaseModule} from "./database/database.module";
 import {ConfigModule} from "@nestjs/config";
+import {CryptoModule} from "./crypto/crypto.module";
 
 @Module({
-	imports: [DatabaseModule,
+	imports: [
+		DatabaseModule,
+		CryptoModule,
 		ConfigModule.forRoot({
 			isGlobal: true,
 		})],