Implement error handling for Flutter Web

[evdokimovs]

Synopsis

Currently, exceptions thrown from the Jason are not usable, so we need to create wrappers for all Jason exceptions and rethrow JS exceptions as converted Dart exceptions.

Solution

1. Add wrappers for all Jason error
2. Implement convertes for the exceptions
3. Re-throw JS exceptions as converted Dart exceptions

Checklist

• Created PR:
  • In draft mode
  • Name contains Draft: prefix
  • Name contains issue reference
  • Has k:: labels applied
  • Has assignee
• Documentation is updated (if required)
• Tests are updated (if required)
• Changes conform code style
• CHANGELOG entry is added (if required)
• FCM (final commit message) is posted
  • and approved
• Review is completed and changes are approved
• Before merge:
  • Milestone is set
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  • Draft: prefix is removed
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[alexlapa]

@evdokimovs ,

Тут instrumented тестам опять плохо, гляньте что может быть. В остальном все ок.

[tyranron]

@evdokimovs please, regenerate assets/pkg/ files before merging this. Running make cargo.build.jason platform=web of latest wasm-pack on my side produces strangerly too huge diff, not only comments changes as intended. So, I should be missing something.