WaitForResults needs to be an option for RouteMatrixRequest

[divemaster2533]

RouteMatrixRequest presents both async and sync operations. For situations where you don't want to run async, which is the default of this api (and the code needs to be updated to handle this as well as the response in this situation provides a URL for periodic checking async), you need to be able to set this in the request to tell the api you are sticking around for a response. I'm happy to add - but I wanted to check in here first and alert you. But - I love the SDK!

[perfahlen]

Happy you find it useful, feel free to add, I welcome contributions!

Azure maps have made changes so I believe this lib is a bit behind and needs to be updated