update ROADMAP.md

the kernel needs to be tested and formatted !

ROADMAP.md

@@ -6,12 +6,14 @@
 - [ ] if possible, separate bootloader-specific requests / responses handling, and try to add support for more bootloaders. Also try to abstract bootloaders differences into a cleaner interface for retrieving responses, etc... (maybe load different modules depending on the detected bootloader ?) (maybe use custom binary format for kernel modules ?)
 - [ ] setup per-cpu variables
 - [ ] setup a stack for the kernel
+- [ ] configure clang-format or some other formatter
 
 ## 01/12/2024
 
 - [ ] get a working memory management subsystem
 - [ ] get a working API for subsystems to register their interrupt handlers
 - [ ] be able to write to the framebuffer (i.e. a proper `zerOS_printk` and some basic framebuffer related API)
+- [ ] write unit tests / runtime selftests for some kernel APIs
 
 ## 15/12/2024