There's a lot that needs to be done here. See the strider-extension-loader Readme for info on the api (under "job plugins").
To use on anything other than localhost:3000, you need to register your own Heroku API client, at https://dashboard.heroku.com/account. See this docs page for more info.
This is a screenshot of what you will see on your dashboard:
Once you have your HEROKU_OAUTH_ID and HEROKU_OAUTH_SECRET, you must configure Strider to use them like this:
heroku config:add PLUGIN_HEROKU_CLIENT_ID=<CLIENT_ID_FROM_HEROKU> PLUGIN_HEROKU_CLIENT_SECRET=<CLIENT_SECRET_FROM_HEROKU>