chore: new error handling strategy (DEV-1770)

[jnussbaum]

resolves DEV-1770

[linear]

DEV-1770 DSP-TOOLS: improve error handling

Currently, BaseError is the most frequently used error class, regardless if the error is handled by the calling method, or if it escalates, so that the user sees a stracktrace on the terminal.

It would be good to handle errors in two different ways:

• BaseError for dsp-tools internal things that (should be) handled somewhere in the code. If they are not handled for some reason, they will escalate, and the user will see a stack trace on his terminal.
• UserError for errors that escalate until the user sees them on the terminal. In this case, the stack trace should NOT be printed, and the error message should be as gentle/useful as possible, so that the user understands it and knows what to do.