Time and activity tracking prototype for the Hackaburg 2019

• android Tracker app that sends the currently active app to the webserver in api-java
• win-daemon Tracker Windows app that transmitts window focus changes to the webserver in api-java
• api-java Spring Boot Backend to provide a Database with a Rest endpoint
• api deprecated backend, built with node
• frontend Frontend with Vue.js, Quasar and node.js