Add package.json

+{
+  "name" : "studybot",
+  "version" : "0.0.0",
+  "private" : "true",
+  "description" : "discord chatbot for study",
+  "main" : "index.js",
+  "author" : "kgu0515@khu.ac.kr",
+  "dependencies": {
+    "@discordjs/opus": "^0.5.3",
+    "discord.js": "^12.5.3",
+    "ffmpeg-static": "^4.4.0",
+    "fs": "^0.0.1-security",
+    "moment": "^2.29.1",
+    "stream": "^0.0.2"
+  }
+}