GUI to generate and edit model and ini (sql)

[T-Born]

As a beginner-user of cubes generating a model.json is quite a task. Especially when it comes to joinig various tables from a snowflake-like scheme with multiple levels and hierarchies...

For me it would be great to have a GUI, which takes the database (and optionaly the sqlalchemy-engine) to get a view of the database model an lets me drag and drop all elements to create the cube- and dimension-model with the appropriate joins and level/hierarchy-configurations to avoid making mistakes writing the model.json file manually and make it much easier to create and maintain cubes-models of complex databases.