CAN Msg TX Session implementation

[serges147]

• Implemented TX behavior:
  • building contiguous payload from TX fragments (see internal ContiguousPayload)
  • pushing the payload to each media canard TX queue
  • can::TransportImpl::run now peeks, pushes to media, and finally pops TX queue items (see runMediaTransmit)
  • implemented dropping of expired transfers
  • implemented flushing of TX queues on transport destruction - no memory leaks now in case there were not transmitted queue items
  • extended ITransport with new setLocalNodeId method
• A bit simplified creation of RX session (b/c it turns out that there is no failure path; but assert is there just in case)
• Addressed issue #349
• More documentation
• Previous PR fixes:
  • memcpy → memmove
  • removed not needed inline-s
  • std:: prefixes before std integrals

Also:

• better coverage stats for branches
• no doxygen warnings
• fixed some places where noexcept were lost
• override → final where applicable (for Scott ;) )

Coverage:

[serges147]

@lydia-at-amazon Lidia, please see my answers. Thnx!

[lydia-at-amazon]

@lydia-at-amazon Lidia, please see my answers. Thnx!

Thanks for responding to all the comments, Sergei! Looks good, will go through and resolve them.