ServiceBus metrics

[lmolkova]

Implements ServiceBus part of #25605

Adds following metrics:

Name	Description	Units	Instrument Type (*)	Value Type	Attribute Key(s)	Attribute Values
messaging.servicebus.messages.sent	Number of events sent	{events}	Counter	Long	net.peer.name	Broker FQDN
					messaging.destination (will change)	Entity name
					otel.status_code	ok or error
messaging.servicebus.receiver.lag	Approximate lag between the time message was received and the time it was enqueued on broker.	seconds	Histogram	Double	net.peer.name	Broker FQDN
					messaging.destination	Entity name
					messaging.servicebus.subscription_name	Subscription name
messaging.servicebus.settlement.request.duration	Duration of settlement call	{ms}	Histogram	Double	net.peer.name	Broker FQDN
					messaging.destination (will change)	Entity name
					messaging.servicebus.subscription_name	Consumer group name
					messaging.servicebus.disposition_status	Disposition status: complete, abandon, defer, suspend (dead-letter)
					otel.status_code	ok or error
messaging.servicebus.settlement.sequence_number	Last settled sequence number	{seqNo}	Gauge	Long	net.peer.name	Broker FQDN
					messaging.destination (will change)	Entity name
					messaging.servicebus.subscription_name	Consumer group name
					messaging.servicebus.disposition_status	Disposition status: complete, abandon, defer, suspend (dead-letter)
					otel.status_code	ok or error

Context:

• https://gist.github.com/lmolkova/489a2b280b8fa68e4c3780c2afaa3b39
• https://gist.github.com/lmolkova/b9004307a09be788af04f05ebe22ad3c

[azure-sdk]

API change check

APIView has identified API level changes in this PR and created following API reviews.

azure-messaging-servicebus