Unify Ctor structure (only default/copy-ctor)

[aentinger]

Only provide default-ctor and copy-ctor, access data via public struct data and provide convenient assignment functions for enum classes where feasible.

[github-actions]

Memory usage change @ 66f8cb0

Board	flash	%	RAM for global variables	%
arduino-beta:mbed:envie_m4	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino-beta:mbed:envie_m7	💚 -64 - 0	-0.01 - 0.0	0 - 0	0.0 - 0.0
arduino-beta:mbed:nano33ble	💚 -64 - 0	-0.01 - 0.0	0 - 0	0.0 - 0.0
arduino:samd:mkrvidor4000	❔ -68 - +32	-0.03 - +0.01	0 - 0	0.0 - 0.0

Click for full report table

Board	examples/UAVCAN-Heartbeat-Publish flash	%	examples/UAVCAN-Heartbeat-Publish RAM for global variables	%	examples/UAVCAN-Heartbeat-Subscribe flash	%	examples/UAVCAN-Heartbeat-Subscribe RAM for global variables	%	examples/UAVCAN-Service-Client flash	%	examples/UAVCAN-Service-Client RAM for global variables	%	examples/UAVCAN-Service-Server flash	%	examples/UAVCAN-Service-Server RAM for global variables	%
arduino-beta:mbed:envie_m4	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
arduino-beta:mbed:envie_m7	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	-64	-0.01	0	0.0
arduino-beta:mbed:nano33ble	0	0.0	0	0.0	-64	-0.01	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
arduino:samd:mkrvidor4000	32	0.01	0	0.0	-20	-0.01	0	0.0	-28	-0.01	0	0.0	-68	-0.03	0	0.0

Click for full report CSV

Board,examples/UAVCAN-Heartbeat-Publish<br>flash,%,examples/UAVCAN-Heartbeat-Publish<br>RAM for global variables,%,examples/UAVCAN-Heartbeat-Subscribe<br>flash,%,examples/UAVCAN-Heartbeat-Subscribe<br>RAM for global variables,%,examples/UAVCAN-Service-Client<br>flash,%,examples/UAVCAN-Service-Client<br>RAM for global variables,%,examples/UAVCAN-Service-Server<br>flash,%,examples/UAVCAN-Service-Server<br>RAM for global variables,%
arduino-beta:mbed:envie_m4,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0
arduino-beta:mbed:envie_m7,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,-64,-0.01,0,0.0
arduino-beta:mbed:nano33ble,0,0.0,0,0.0,-64,-0.01,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0
arduino:samd:mkrvidor4000,32,0.01,0,0.0,-20,-0.01,0,0.0,-28,-0.01,0,0.0,-68,-0.03,0,0.0