chore: unify error handling

[mini-bomba]

preferably by copying the error handling framework from backend

[mini-bomba]

i recently moved out the error handling code from the main backend into an error handling library:

• https://github.com/Solvro/lib-solvro-error-handling
• https://www.npmjs.com/package/@solvro/error-handling

this should make this task easier