Feature/jsonpath replace

[dukeofharen]

Added option to also allow the replacing of JSON values using JSONPath in the response body. Here is an example:

- id: jsonpath-replace
  tenant: integration
  conditions:
    method: GET
    url:
      path:
        equals: /jsonpath-replace
  response:
    json: '{"name": "Bassie", "city": "Amsterdam"}'
    replace:
      - jsonPath: '$.name'
        replaceWith: 'Adriaan'
      - jsonPath: '$.city'
        replaceWith: 'Groningen'