build: добавлен *.layout в .gitignore

.gitignore

@@ -1,2 +1,3 @@
 /bin
 /obj
+/project.layout

project.cbp

@@ -32,6 +32,7 @@
 			<Add option="-Wall" />
 			<Add option="-fexceptions" />
 		</Compiler>
+		<Unit filename=".gitignore" />
 		<Unit filename="main.cpp" />
 		<Extensions>
 			<lib_finder disable_auto="1" />