Merge pull request #20442 from yuwata/network-can-introduce-many-settings

network: introduce several CAN interface related settings

diff --cc man/systemd.network.xml
Simple merge

diff --cc src/network/networkd-network-gperf.gperf
Simple merge

diff --cc src/network/networkd-network.c
Simple merge

diff --cc src/network/networkd-network.h
Simple merge

diff --cc test/fuzz/fuzz-network-parser/directives.network
Simple merge