Add One Click Deployment Buttons to cloud

Many PAAS solutions offer one-click deployment, to easier deployment in cloud, thus enabling others to deploy trydiffoscope (and in the process probably increase the memory & max-file-size limits)

IBM cloud one click: https://cloud.ibm.com/docs/ContinuousDelivery?topic=ContinuousDelivery-deploy-button

Scalingo one click: http://doc.scalingo.com/deployment/one-click-deploy.html

Heroku one click: https://devcenter.heroku.com/articles/heroku-button

Azure one click: https://docs.microsoft.com/en-us/azure/azure-resource-manager/templates/deploy-to-azure-button

see how it looks for example in loklak_server project: https://github.com/loklak/loklak_server#how-do-i-install-loklak-download-build-run

they described how it works in: https://blog.fossasia.org/working-of-one-click-deployment-buttons-in-loklak/