kernel: Rewrite kernle version code management

Co-authored-by: lamadaemon <i@lama.icu>
Signed-off-by: ShirkNeko <109797057+ShirkNeko@users.noreply.github.com>

manager/app/src/main/cpp/ksu.h

@@ -10,6 +10,8 @@
 
 bool become_manager(const char *);
 
+void get_full_version(char* buff);
+
 int get_version();
 
 bool get_allow_list(int *uids, int *size);