Move device to a separate build target

sdl_host/BUILD

@@ -1,5 +1,5 @@
 cc_binary(
     name = "sdl_host",
     srcs = glob(["*.c", "*.h"]),
-    deps = ["//game:game", "//sdl:sdl"],
+    deps = ["//device:device", "//game:game", "//sdl:sdl"],
 )

sdl_host/main.c

@@ -4,8 +4,8 @@
 // don't use sdl's redefinition of main
 #define SDL_MAIN_HANDLED
 #include "sdl/include/SDL.h"
+#include "device/device.h"
 #include "game/game.h"
-#include "game/device.h"
 
 void sdl_host_suggest_dimensions(uint32_t* window_w, uint32_t* window_h);
 void sdl_host_loop();