Provide MockConfiguration to StubMapping converter

[kulasekp]

Implement simple converter (without external libraries) that will create StubMapping model from MockConfiguration.

Proposed mapping:

MockConfiguration	StubMapping
id	id
name	name
order	priority
path	one of request.urlPattern (most probably urlPattern)
httpMethod	request.method
timeout	response.fixedDelayMilliseconds
status	response.status
configurationContent	response.body