Use wrapped exception instead of result for error propagation

The database use to handle issues with result type, which led to a complex Trace module with a lot of bind and a complex codebase.

Instead, function that can fail are now wrapped in try_with which create a local exception and requires an handler for this exception. The main function in trace for error casting and propagation have been adapted to this new formalism, the other are discarded

This transformation allowed to simplify several function that was returning result for homogeneity without actually ever failling. Thus removing many unecessary bind

• has a changelog entry