introduce a stable NTL_DDK driver ABI to replace direct HAL_API and kernel-header access in drivers, add code/kernel/io_ddk.c and code/public/ntlite/ddk/ headers, change DriverEntry to take (const NTL_DDK*, NTL_DRIVER_INIT*), update kmain to build the DDK once via IoInitializeDdk/IoGetDdk and hand it to both boot and runtime drivers, downgrade code/public/ntlite/ddi/io_driver.h to a legacy I/O model header pulling from ntlite/ddk instead of kernel internals, move code/third_party/lwip into code/drivers/net/lwip/third_party, fix up lwip_sources.txt and build.c include paths to match, split build.c's single CFLAGS macro into COMMON/KERNEL/USER/BOOT/DRIVER cflags.

code/drivers/net/lwip/include/arch/cc.h

@@ -4,7 +4,7 @@
 
 #include <stdint.h>
 #include <stddef.h>
-#include <kernel/ke_debug.h>
+#include <ntlite/ddk/debug.h>
 
 #ifndef LITTLE_ENDIAN
 #define LITTLE_ENDIAN 1234