set up eval scratch; promote raddbg_markup to base layer, plug in custom codebase vsnprintf

src/base/base_markup.h

@@ -4,6 +4,10 @@
 #ifndef BASE_MARKUP_H
 #define BASE_MARKUP_H
 
+#define RADDBG_MARKUP_IMPLEMENTATION
+#define RADDBG_MARKUP_VSNPRINTF raddbg_vsnprintf
+#include "lib_raddbg_markup/raddbg_markup.h"
+
 internal void set_thread_name(String8 string);
 internal void set_thread_namef(char *fmt, ...);
 #define ThreadNameF(...) (set_thread_namef(__VA_ARGS__))