Add Javascript update Github Actions workflow (#275)

* JS update workflow

* Update package.json to see if workflow fires properly

* Commit updated Javascript packages

Co-authored-by: Owncast <owncast@owncast.online>

build/javascript/package.json

@@ -34,6 +34,6 @@
     "test": "echo \"Error: no test specified\" && exit 1",
     "build": "npm install && npx snowpack install && cp node_modules/video.js/dist/video-js.min.css web_modules/videojs && cp -R web_modules ../../webroot/js"
   },
-  "author": "",
+  "author": "Owncast",
   "license": "ISC"
 }