Rename network-related settings in config

[crusaderky]

Follow-up to #6933

This is very ugly and confusing:

distributed/distributed/worker.py

Lines 523 to 528 in 34b18a9

	transfer_incoming_count_limit = dask.config.get(
	"distributed.worker.connections.outgoing"
	)
	self.transfer_outgoing_count_limit = dask.config.get(
	"distributed.worker.connections.incoming"
	)

We should rename

• distributed.worker.connections.outgoing to distributed.worker.transfer.incoming_count_limit
• distributed.worker.connections.incoming to distributed.worker.transfer.outgoing_count_limit

The renames must be added to distributed.config.aliases.

CC @hendrikmakait

[crusaderky]

The aliases are non-trivial because they are not yet supported in dask/dask:
https://github.com/dask/dask/blob/222ea067db35f65787ee2a877b6e29bb85ae9eed/dask/config.py#L557-L558