dist/tools/uncrustify: add ztimer files to whitelist
dist/tools/uncrustify: add ztimer files to whitelist

authmillenon/RIOT,kYc0o/RIOT,kaspar030/RIOT,authmillenon/RIOT,OTAkeys/RIOT,kYc0o/RIOT,basilfx/RIOT,basilfx/RIOT,kaspar030/RIOT,OlegHahm/RIOT,kYc0o/RIOT,ant9000/RIOT,RIOT-OS/RIOT,ant9000/RIOT,ant9000/RIOT,OTAkeys/RIOT,OlegHahm/RIOT,authmillenon/RIOT,kYc0o/RIOT,miri64/RIOT,RIOT-OS/RIOT,miri64/RIOT,miri64/RIOT,OTAkeys/RIOT,OlegHahm/RIOT,authmillenon/RIOT,kaspar030/RIOT,OlegHahm/RIOT,RIOT-OS/RIOT,jasonatran/RIOT,RIOT-OS/RIOT,kYc0o/RIOT,RIOT-OS/RIOT,basilfx/RIOT,authmillenon/RIOT,miri64/RIOT,ant9000/RIOT,authmillenon/RIOT,ant9000/RIOT,basilfx/RIOT,jasonatran/RIOT,OTAkeys/RIOT,kaspar030/RIOT,jasonatran/RIOT,basilfx/RIOT,OlegHahm/RIOT,miri64/RIOT,OTAkeys/RIOT,jasonatran/RIOT,kaspar030/RIOT,jasonatran/RIOT