Add lib and build script (Windows Only)

vendor/kb_text_shape/src/build.bat

@@ -0,0 +1,8 @@
+@echo off
+
+if not exist "..\lib" mkdir ..\lib
+
+cl -nologo -MT -TC -O2 -c kb_text_shape.c
+lib -nologo kb_text_shape.obj -out:..\lib\kb_text_shape.lib
+
+del *.obj

vendor/kb_text_shape/src/kb_text_shape.c

@@ -0,0 +1,5 @@
+#include <stdlib.h>
+#include <stdint.h>
+
+#define KB_TEXT_SHAPE_IMPLEMENTATION
+#include "kb_text_shape.h"