chore: add macOS notarization support for DMG builds (#944)

package.json

@@ -49,10 +49,10 @@
       "appId": "de.t7n.apps.mqtt-explorer",
       "category": "public.app-category.developer-tools",
       "hardenedRuntime": true,
+      "gatekeeperAssess": false,
       "publish": [
         "github"
-      ],
-      "entitlements": "res/entitlements.mas.plist"
+      ]
     },
     "linux": {
       "category": "Development",
@@ -76,7 +76,8 @@
       "buildResources": "res",
       "output": "build"
     },
-    "afterPack": "./dist/scripts/afterPack.js"
+    "afterPack": "./dist/scripts/afterPack.js",
+    "afterSign": "./dist/scripts/notarize.js"
   },
   "author": "Thomas Nordquist",
   "email": "xxnerowingerxx@gmail.com",