Backend service

Goal of this task is to ensure we have a server able to:

• provide what the UI needs to be functional (like the list of facets and supported build tools)
• generate a zip from the information filled into the UI (will be a maven/gradle project ready to run and easy to deploy into the studio)
• gather statistics about the usage (to start we can store the number of project created, the number of component created, the number of inputs/outputs, stats about the configuration types)