Implement Detach for AMQP message receiver; Remove MessageReceiver from an Arc because it doesn't need to be in one.

[LarryOsterman]

• Implemented AmqpReceiver::detach to allow clean shutdown of message receiver.
• Ignore ClosedByRemote error when handling a sender detach - that can happen.
• Removed a dead max_message_size method from AMQP Receiver.
• Minor tweaks to imports caused by removing blank lines to let rustfmt handle all imports consistently.

Github Summary.

This pull request includes several changes to the sdk/core/azure_core_amqp crate, focusing on improving the handling of receiver and sender detachment, updating imports, and removing unused methods. The most important changes include modifying the detachment process for receivers and senders, updating import statements, and removing the max_message_size method from the AmqpReceiverApis trait.

Improvements to receiver and sender detachment:

• sdk/core/azure_core_amqp/src/fe2o3/receiver.rs: Modified the detach method in the impl AmqpReceiverApis for Fe2o3AmqpReceiver to handle errors more gracefully and log appropriate messages.
• sdk/core/azure_core_amqp/src/fe2o3/sender.rs: Modified the detach method in the impl AmqpSenderApis for Fe2o3AmqpSender to handle errors more gracefully and log appropriate messages.

Updates to imports:

• sdk/core/azure_core_amqp/src/fe2o3/receiver.rs: Updated import statements to include AmqpLinkDetach and additional logging utilities.
• sdk/core/azure_core_amqp/src/fe2o3/sender.rs: Updated import statements to include AmqpLinkDetach and additional logging utilities.

Removal of unused methods:

• sdk/core/azure_core_amqp/src/receiver.rs: Removed the max_message_size method from the AmqpReceiverApis trait.
• sdk/core/azure_core_amqp/src/noop.rs: Removed the max_message_size method from the impl AmqpReceiverApis for NoopAmqpReceiver.

[LarryOsterman]

Ping. Hopefully someone can take a look :).