afegida clase text

Makefile

@@ -43,6 +43,7 @@ APP_SOURCES := \
     source/core/rendering/shape_renderer.cpp \
     source/core/graphics/shape.cpp \
     source/core/graphics/shape_loader.cpp \
+    source/core/graphics/vector_text.cpp \
     source/game/options.cpp \
     source/game/joc_asteroides.cpp \
     source/game/entities/nau.cpp \