use SoundCheck/ReplayGain for normalization

package.json

@@ -25,6 +25,7 @@
     "discord-rpc": "^4.0.1",
     "ejs": "^3.1.6",
     "electron-acrylic-window": "^0.5.11",
+    "electron-fetch": "^1.7.4",
     "electron-log": "^4.4.3",
     "electron-store": "^8.0.1",
     "electron-updater": "^4.6.1",
@@ -32,7 +33,9 @@
     "express": "^4.17.2",
     "get-port": "^5.1.1",
     "lastfmapi": "^0.1.1",
+    "media-metadata": "^2.1.0",
     "mpris-service": "^2.1.2",
+    "music-metadata": "^7.11.4",
     "react": "^17.0.2",
     "react-dom": "^17.0.2",
     "source-map-support": "^0.5.21",