fix: Relative import instead of absolute import

fix: Add migration for production DB

fix: Format graphql errors
fix: User undefined cause exception in users module
fix: Active user datashield and fix tos case senstive

Two new GraphQL routes added
Remove request injection into the engine service
Cleaning up engine interface (remove unused method, clean return types)
Unit tests

feat: Add File assets module (refactoring)

This reverts merge request !25

Renamed DummyResult with RawResult
Added GraphQL type json
Added mechanism to convert result based on type data (need adaptations)

Added default configuration file for port and engine details