Fix obnoxious logging

[woksin]

Added:

• PingTimedOut exception

Changed:

• Overall improvements on log messages
• Try-catch around ReverseCallClient.Connect for logging when rpc was cancelled
• Try-catch around ReverseCallClient.Handle catching RpcException when StatusCode == StatusCode.Cancelled. Log that it was cancelled by either client or server. If neither it was caused by a ping timeout and should throw appropriate PingTimedOut-exception.
• HandleRequest => OnReceivedRequest
• Try-catch around OnReceivedRequest for logging when exceptions occur so that they are not swallowed
• Try-catch around StartPinging in ReverseCallDispatcher for logging when exceptions occur so that they are not swallowed
• Only log warning when exception occurs during handling of client messages and cancellation token is not cancelled
• Ping Timeout Debug log