devel/zycore-c: Update to 1.5.0

ChangeLog: https://github.com/zyantific/zycore-c/releases/tag/v1.5.0

• Better support for linux kernel
• Add ZYAN_GETENV macro to LibC.h
• Add missing (void) on functions without args
• Set DOXYGEN_GENERATE_MAN config option to generate manpages
• Add support for loongarch
• Support for more unix-like systems, such as NetBSD

PR: 278096