Include config.h everywhere

Ref: <https://github.com/Genymobile/scrcpy/issues/829>

Suggested-by: Louis Kruger <louisk@gmail.com>

app/src/queue.h

@@ -6,6 +6,8 @@
 #include <stddef.h>
 #include <SDL2/SDL_assert.h>
 
+#include "config.h"
+
 // To define a queue type of "struct foo":
 //    struct queue_foo QUEUE(struct foo);
 #define QUEUE(TYPE) { \