Add AOM disclaimer

Author: giacomocusinato

electron-app/PATENT_DISCLAIMER

@@ -0,0 +1,6 @@
+Qualcomm neither accepts, nor undertakes any action to satisfy conditions in
+support of the acceptance of, the Alliance for Open Media Patent License 1.0.
+The license text has been retained for the benefit of our customers and 
+partners, so that they receive proper notice of the license that is available
+to them by the Licensors under the AOM Patent License 1.0.
+See also: https://www.qualcomm.com/content/dam/qcomm-martech/dm-assets/documents/AOM-Statement.pdf

electron-app/package.json

@@ -127,6 +127,7 @@
       "resources/icons/512x512.png",
       "!**node_modules/**"
     ],
+    "extraFiles": "PATENT_DISCLAIMER",
     "extraResources": [
       {
         "from": "plugins",