Pasaeta de "include-what-you-use" per arreglar els includes

Renombrats alguns fitxers per consistencia

source/jail_audio.h

@@ -1,12 +1,13 @@
 #pragma once
-#include <SDL2/SDL.h>
+
+#include <SDL2/SDL_audio.h>   // for SDL_AudioFormat
+#include <SDL2/SDL_stdinc.h>  // for Uint32, Uint8
+struct JA_Music_t;  // lines 5-5
+struct JA_Sound_t;  // lines 6-6
 
 enum JA_Channel_state { JA_CHANNEL_INVALID, JA_CHANNEL_FREE, JA_CHANNEL_PLAYING, JA_CHANNEL_PAUSED, JA_SOUND_DISABLED };
 enum JA_Music_state { JA_MUSIC_INVALID, JA_MUSIC_PLAYING, JA_MUSIC_PAUSED, JA_MUSIC_STOPPED, JA_MUSIC_DISABLED };
 
-struct JA_Sound_t;
-struct JA_Music_t;
-
 void JA_Init(const int freq, const SDL_AudioFormat format, const int channels);
 void JA_Quit();