Janne Valkealahti 4c48017a97 Implement more flexible error handling ...

- Add exception handling around new interface CommandExceptionResolver
  which allows to define a chain of resolvers to process errors before
  exception is bubbled up to result handlers.
- Will be foundation to add more sophisticated error handling features
  compared to what spring itself have for rest layer.
- Resolver returns CommandHandlingResult holder which further can be
  used to make a choice what to print into console and if spesific exit
  code should be used in non-interactive mode.
- Exception handling can be defined globally and per command giving
  a change for user to customise i.e. error thrown by parser.
- CommandParserExceptionResolver replaces CommandParserExceptionsExceptionResultHandler
  and provides more meaninful message for missing options.
- Fixes #503

2022-10-14 10:55:05 +01:00

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