Update rororo ValidationError to be compatible with fastapi / django-ninja ones

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Currently rororo ValidationError has next format,

interface ValidationError {
  detail: Array<{
    loc: Array<string | number>
    message: string
  }>
}

while fastapi & django-ninja use a bit different format,

interface ValidationError {
  detail: Array<{
    loc: Array<string | number>
    msg: string
    type: string
  }>
}

With that in mind need to update rororo ValidationError to be compatible with other validation errors.

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Other idea to consider is to move all user exceptions into separate application

Or try to reuse some lightweight exceptions from some other package

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New format, compatible with FastAPI / django-ninja, should be default for rororo==4.0.0