Implement pause menu music (#463)

UOP1_Project/Assets/Prefabs/Gameplay/MusicPlayer.prefab

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+  _onPauseOpened: {fileID: 11400000, guid: 995da9391d4589044a8819eeb09bab8f, type: 2}

UOP1_Project/Assets/Prefabs/UI/GameplayScene/Pause_Screen.prefab

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UOP1_Project/Assets/Scripts/Audio/MusicPlayer.cs

-using System;
-using System.Collections;
-using System.Collections.Generic;
-using UnityEngine;
+using UnityEngine;
 
 public class MusicPlayer : MonoBehaviour
 {
 	[SerializeField] private AudioConfigurationSO _audioConfig = default;
+	[Header("Pause music configuration")]
+	[SerializeField] private AudioCueSO _pauseMusic = default;
+	[SerializeField] private BoolEventChannelSO _onPauseOpened = default; 
+		_onPauseOpened.OnEventRaised += PlayPauseMusic;
 		_onSceneReady.OnEventRaised += PlayMusic;
 	}
 
+		_onPauseOpened.OnEventRaised -= PlayPauseMusic;
+	}
+	private void PlayPauseMusic(bool open)
+	{
+		if (open)
+			_playMusicOn.RaisePlayEvent(_pauseMusic, _audioConfig);
+		else
+			PlayMusic();
 	}
 }

UOP1_Project/Assets/Scripts/UI/UIPause.cs

 	public UnityAction BackToMainRequested = default;
 
 	[SerializeField] private InputReader _inputReader = default;
+	[SerializeField] private BoolEventChannelSO _onPauseOpened = default;
+		_onPauseOpened?.OnEventRaised(true);
 		_resumeButton.SetButton(true);
 		_inputReader.menuCloseEvent += Resume;
 		_resumeButton.Clicked += Resume;
 
 	private void OnDisable()
 	{
+		_onPauseOpened?.OnEventRaised(false);
 		_inputReader.menuCloseEvent -= Resume;
 
 		_resumeButton.Clicked -= Resume;

UOP1_Project/Assets/ScriptableObjects/UI/OnPauseOpened.asset

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