Add automated checks for desktop app runtime #233

- Add automation script for building, packaging, installing, executing
  and verifying Electron distrubtions across macOS, Ubuntu and Windows.
- Add GitHub workflow to run the script to test distributions using the
  script.
- Update README with new workflow status badge.
- Add application initialization log to desktop applications to be able
  to test against crashes before application initialization.

package-lock.json

@@ -6,7 +6,7 @@
   "packages": {
     "": {
       "name": "privacy.sexy",
-      "version": "0.12.0",
+      "version": "0.12.1",
       "hasInstallScript": true,
       "dependencies": {
         "@fortawesome/fontawesome-svg-core": "^6.4.0",