Lindomar reitz add support to match integers and floats

[YOU54F]

continuation of #38

fixes #13 by utilising regex string from pact-jvm

notes from previous PR

• on consumer side, pact.term allowed int and float(decimal) value, with the value changed to a string (which is stored in the pact file)
• on the provider side, int and float(decimal) values returned from the consumer, were not transformed into strings for comparison against the specified term regex.

This updated change will allow int/float(decimal) values to be changed to string at the point of comparison against the regex, both during consumer and provider tests.

On the provider side, if the value is a float or string, the error message returned returns the object type in the message.

With regard to existing behaviour, it may also be noted that using Pact.like(1) or Pact.like(50.51) will serialising the correct value to the contract (int or float) however the provider test would pass with a type match, when the provider returns 50 and the consumer set Pact.like(50.51).

Integer

Term.new(generate: 10, matcher: /[0-9]/

Float / Decimal

Term.new(generate: 50.51, matcher: /\d(\.\d{1,2})/)