Is your feature request related to a problem? Please describe.
Currently it is possible to export the JSON definition files for Apps, Data Queries etc. individually. However, it could be a lot of them over time in a Workspace. This makes it hard to move things to another Workspace or Lowcoder Installation.

Describe the solution you'd like
On an Export / Import Page it should be possible to see all resources of a Workspace and choose which of them to export in a single JSON Export file. Same time it must be possible to import selected Resources from such JSON Export file.