Use of the same nomenclature for the function names on WYZ and Vortex players

[mvac7]

The purpose is to make it easier to use.

• void PT3_InitSong(unsigned int SongADDR, char loop);
• void PT3_Decode(); // Decode a step from Player
• void PT3_PlayAY(); // Send data to AY registers. Execute on each interruption of VBLANK
• void PT3_Loop(char loop); // Change loop mode (false = 0; true = 1)
• void PT3_Pause(); // Pause song playback
• void PT3_Resume(); // Resume song playback