Add React Developers Tools (#1410)

Signed-off-by: Panu Horsmalahti <phorsmalahti@mirantis.com>

package.json

@@ -222,6 +222,7 @@
     "command-exists": "1.2.9",
     "conf": "^7.0.1",
     "crypto-js": "^4.0.0",
+    "electron-devtools-installer": "^3.1.1",
     "electron-updater": "^4.3.1",
     "electron-window-state": "^5.0.3",
     "file-type": "^14.7.1",
@@ -281,6 +282,7 @@
     "@types/color": "^3.0.1",
     "@types/crypto-js": "^3.1.47",
     "@types/dompurify": "^2.0.2",
+    "@types/electron-devtools-installer": "^2.2.0",
     "@types/electron-window-state": "^2.0.34",
     "@types/fs-extra": "^9.0.1",
     "@types/hapi": "^18.0.3",