String safety (#1548)

* Array size UB fixes

* Fix ShieldD

* Remove (almost) all unsafe strcpy calls

Bunch of macros. C arrays are easy enough and just need a different call. For various cases where a char* is passed around bare, I've made a TEXT_SPAN macro that can store a length too for bounds checking.

* Move crash handling in safe string operations to separate TU

* strcat safe version

* sprintf made safe too

* Fix compile

libs/JSystem/src/JKernel/JKRThread.cpp

@@ -7,6 +7,8 @@
 #include "global.h"
 #include <stdint.h>
 
+#include "dusk/string.hpp"
+
 #if TARGET_PC
 #include "dusk/os.h"
 #endif
@@ -274,7 +276,7 @@ void JKRThreadSwitch::draw(JKRThreadName_* thread_name_list, JUTConsole* console
 
             if (!thread_print_name) {
                 char buffer[16];
-                sprintf(buffer, "%d", loadInfo->getId());
+                SAFE_SPRINTF(buffer, "%d", loadInfo->getId());
                 thread_print_name = buffer;
             }