feat: allow boomifying any value (#291)

[matthieusieben]

Creation of a new boomifyAny that allows creating a boom error from an unknown value.

This is a proposed fix for #291

[Nargonath]

Thanks for the PR. We'd need some tests for the runtime behaviour and also for the types (test/index.js and test/index.ts).

Not sure if we want to relax the current API or provide this new function though.

[matthieusieben]

Please tell me if you are ready to accept before I implement the tests.

For context, here is how this would be used:

try {
  // some code that throw using non-error
} catch (err) {
  // in TypeScript err is of type unknown
  throw boomifyAny(err, { message: 'Unexpected error while performing code that throws non-error' })
}

[kanongil]

Personally, I would much prefer to do a breaking change to boomify, as suggested in #291 (comment), which would also update the argument type to any.

[matthieusieben]

Edit moved comment to #291 (comment)