* Add one Jaeger span per relay parent
This adds one Jaeger span per relay parent, instead of always creating
new spans per relay parent. This should improve the UI view, because
subsystems are now grouped below one common span.
* Fix doc tests
* Replace `PerLeaveSpan` to `PerLeafSpan`
* More renaming
* Moare
* Update node/subsystem/src/lib.rs
Co-authored-by: Andronik Ordian <write@reusable.software>
* Skip the spans
* Increase `spec_version`
Co-authored-by: Andronik Ordian <write@reusable.software>
* update networking types
* port over overseer-protocol message types
* Add the collation protocol to network bridge
* message sending
* stub for ConnectToValidators
* add some helper traits and methods to protocol types
* add collator protocol message
* leaves-updating
* peer connection and disconnection
* add utilities for dispatching multiple events
* implement message handling
* add an observedrole enum with equality and no sentry nodes
* derive partial-eq on network bridge event
* add PartialEq impls for network message types
* add Into implementation for observedrole
* port over existing network bridge tests
* add some more tests
* port bitfield distribution
* port over bitfield distribution tests
* add codec indices
* port PoV distribution
* port over PoV distribution tests
* port over statement distribution
* port over statement distribution tests
* update overseer and service-new
* address review comments
* port availability distribution
* port over availability distribution tests