build: Compile into build folder

.gitignore

@@ -0,0 +1 @@
+Build

build.bat

@@ -1,2 +1,8 @@
 @echo off
-cl main.cpp -Z7 -fsanitize=address -nologo -link || exit /b 1
+set script_dir_backslash=%~dp0
+set script_dir=%script_dir_backslash:~0,-1%
+
+if not exist Build mkdir Build
+pushd Build
+cl %script_dir%\asan_example.cpp -Zi -O2 -fsanitize=address -nologo -link || exit /b 1
+popd