Karl Fessel

i moved the doccheck changes to #18431 and added the Kconfig adaption

> `log_%` should pull in `log` as a dependency in `sys/Makefile.dep`, so it also works as long as we still use "legacy" dependencies. this already is the case in master...

@maribu and @benpicco showed some interest i this PRs predecessors

looks good in huge parts, :+1: But most boards do not provide periph_ptp -> the test ztimer_xsec will fail for most boards (inkl. native). The test needs to adapt either...

how about adding what is needed for USEMODULE just at the beginning of the title defined in defgroup like: 5x5 Font 'Mineplex' -> mineplex: 5x5 Font 'Mineplex' colorful logging ->...

i ran module info [m1.txt](https://github.com/RIOT-OS/RIOT/files/9120316/m1.txt) failing [m2.txt](https://github.com/RIOT-OS/RIOT/files/9120317/m2.txt) working `make tests-zt tests-pkt info-modules > m3` [m3.txt](https://github.com/RIOT-OS/RIOT/files/9120318/m3.txt) working `USEMODULE="ztimer_sec" make tests-zt tests-pkt info-modules > m4` [m4.txt](https://github.com/RIOT-OS/RIOT/files/9120491/m4.txt) failing

`USEMODULE="ztimer_sec" make tests-zt tests-pkt` also has the issue

`USEMODULE="ztimer_sec evtimer" make tests-zt term` make the issue appear

not calling `xtimer_init` when when using compat mode seems to solve https://github.com/RIOT-OS/RIOT/blob/897abd09f2539f4e36e34e78402d7dcfad09e5b6/sys/include/ztimer/xtimer_compat.h#L70-L73 Should we remove L72? (sys/auto_init has the same do not call xtimer_init if compat mode)

ztimer64 is very capable to do what this does, but this is so much on point providing a absolute measure of time in a binary partition of seconds (there are...