timer - Start implementing timer

Makeconf

@@ -1,6 +1,6 @@
 TARGETS := libemu.a vgbc vgbc.test vgbc.inspect vgbc.gbdif vgbc.lcdtest
 
-sfml_packages := sfml-graphics
+sfml_packages := sfml-graphics sfml-system
 sfml_CXXFLAGS := $(shell pkg-config --cflags $(sfml_packages))
 sfml_LDFLAGS := $(shell pkg-config --libs $(sfml_packages))
 
@@ -21,6 +21,7 @@ modules_libemu.a := memory/device.o \
                     lcd/lcd.o \
                     lcd/palette.o \
                     input/joypad.o \
+                    timer/timer.o \
 
 modules_vgbc := main.o libemu.a
 verb_vgbc := link