refactor: organize imports and enhance formatting across backend files

Optimized import order, applied consistent formatting, and improved readability in various modules, including `contents`, `media`, and `auth` services.

backend/src/contents/contents.controller.ts

@@ -1,3 +1,4 @@
+import { CacheInterceptor, CacheTTL } from "@nestjs/cache-manager";
 import {
 	Body,
 	Controller,
@@ -5,6 +6,7 @@ import {
 	Delete,
 	Get,
 	Header,
+	NotFoundException,
 	Param,
 	ParseBoolPipe,
 	ParseIntPipe,
@@ -15,9 +17,7 @@ import {
 	UploadedFile,
 	UseGuards,
 	UseInterceptors,
-	NotFoundException,
 } from "@nestjs/common";
-import { CacheInterceptor, CacheTTL } from "@nestjs/cache-manager";
 import { FileInterceptor } from "@nestjs/platform-express";
 import type { Request, Response } from "express";
 import { AuthGuard } from "../auth/guards/auth.guard";
@@ -130,9 +130,10 @@ export class ContentsController {
 		}
 
 		const userAgent = req.headers["user-agent"] || "";
-		const isBot = /bot|googlebot|crawler|spider|robot|crawling|facebookexternalhit|twitterbot/i.test(
-			userAgent,
-		);
+		const isBot =
+			/bot|googlebot|crawler|spider|robot|crawling|facebookexternalhit|twitterbot/i.test(
+				userAgent,
+			);
 
 		if (isBot) {
 			const imageUrl = this.contentsService.getFileUrl(content.storageKey);