Created a SoapClient Processor

I had a need to log a formatted SOAP request and response with Monolog. For security purposes I also need to sanitize some elements of the request and response.

I created a Processor for the SoapClient, but due to the SoapClient not being available globally I'm expecting the variable in the context array of the record. This is the part I like the least - if you have a recommendation for making this better i'll implement it.