refactor(backend): queue system presented

queue system is presented to be more scalable app and reliable download system

BREAKING CHANGE: redis is added and required now

close #5

src/backend/package.json

@@ -17,10 +17,12 @@
     "test:watch": "jest --watch",
     "test:cov": "jest --coverage",
     "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
-    "test:e2e": "jest --config ./test/jest-e2e.json"
+    "test:e2e": "jest --config ./test/jest-e2e.json",
+    "gen": "nest generate"
   },
   "dependencies": {
-    "@distube/ytdl-core": "^4.14.4",
+    "@distube/ytdl-core": "^4.15.1",
+    "@nestjs/bullmq": "^10.2.3",
     "@nestjs/common": "^10.0.0",
     "@nestjs/config": "^3.2.2",
     "@nestjs/core": "^10.0.0",
@@ -32,13 +34,14 @@
     "@nestjs/websockets": "^10.3.10",
     "@types/fluent-ffmpeg": "^2.1.24",
     "@types/yt-search": "^2.10.3",
+    "bullmq": "^5.31.2",
     "fluent-ffmpeg": "^2.1.3",
     "isomorphic-unfetch": "^4.0.2",
     "reflect-metadata": "^0.2.0",
     "rxjs": "^7.8.1",
-    "spotify-url-info": "^3.2.15",
+    "spotify-url-info": "^3.2.18",
     "sqlite3": "^5.1.7",
-    "yt-search": "^2.11.0"
+    "yt-search": "^2.12.1"
   },
   "devDependencies": {
     "@nestjs/cli": "^10.0.0",