Logging improvements

[ramonsmits]

• Log exceptions on the same line as log entry
• Log level for critical errors changed from WARN to FATAL as critical errors indicate a broken state

Before:

2023-08-22 14:28:04.5672|87|Error|NServiceBus.Transport.AzureServiceBus.MessagePump|Failed to execute recoverability.
Azure.Messaging.ServiceBus.ServiceBusException: The lock supplied is invalid. Either the lock expired, or the message has already been removed from the queue, or was received by a different receiver instance. (MessageLockLost). For troubleshooting information, see https://aka.ms/azsdk/net/servicebus/exceptions/troubleshoot.
   at Azure.Messaging.ServiceBus.Amqp.AmqpReceiver.ThrowLockLostException()
   at Azure.Messaging.ServiceBus.Amqp.AmqpReceiver.<DisposeMessageAsync>d__45.MoveNext()

After:

2023-08-22 14:28:04.5672|87|Error|NServiceBus.Transport.AzureServiceBus.MessagePump|Failed to execute recoverability.|Azure.Messaging.ServiceBus.ServiceBusException: The lock supplied is invalid. Either the lock expired, or the message has already been removed from the queue, or was received by a different receiver instance. (MessageLockLost). For troubleshooting information, see https://aka.ms/azsdk/net/servicebus/exceptions/troubleshoot.
   at Azure.Messaging.ServiceBus.Amqp.AmqpReceiver.ThrowLockLostException()
   at Azure.Messaging.ServiceBus.Amqp.AmqpReceiver.<DisposeMessageAsync>d__45.MoveNext()

This way log parsing returns more useful results. Currently, the results look like the following making it impossible to distinguish lines: