Add font loader

device/device.h

@@ -4,9 +4,9 @@
 #include <stdint.h>
 #include <stdbool.h>
 
-// 240 x 135 is also cool
-#define DEVICE_W 128
-#define DEVICE_H 128
+// 256 x 144 is also cool
+#define DEVICE_W 256
+#define DEVICE_H 144
 
 typedef enum {
     DEVICE_BUTTON_L=0,