Combine multipleOf messages

[jdesrosiers]

The multipleOf error handler can combine multiple messages on the same location into one message.

{
  "allOf": [
    { "multipleOf": 3 },
    { "multipleOf": 2 }
  ]
}

This currently produces two messages

• Expected a number that is a multiple of 3
• Expected a number that is a multiple of 2

This can be combined into a single message

• Expected a number that is a multiple of 6

This will require updating the multipleOf error handler to keep track of all multipleOf messages for a specific location and combining them to produce a single message.

[Sam-61s]

Hey @jdesrosiers,
I understand the issue. I'll implement this by collecting all multipleOf values for the same instance location, computing their LCM, and generating a single error message.
Assign this to me, I'd like to work on this...

[jdesrosiers]

You got it. Don't forget to add tests.