Ajout de la cinématique de début et refonte du système audio

Et toujours un peu de correction de bug par ci par là

entities/interactable_3d/interactable_3d.gd

@@ -0,0 +1,38 @@
+extends Area3D
+class_name Interactable3D
+
+@export var interactable = true
+
+signal clicked
+
+@export var hover_animation_player : AnimationPlayer
+@export var audio_player : AudioStreamPlayer3D
+
+func click():
+    clicked.emit()
+
+func _ready():
+    if audio_player:
+        var default_volume := audio_player.volume_db
+        audio_player.volume_db += GameInfo.settings_data.sfx_volume
+        GameInfo.settings_data.sound_changed.connect(
+            func(settings : SettingsData):
+                audio_player.volume_db = default_volume + settings.sfx_volume
+        )
+
+
+func play_audio():
+    if audio_player:
+        audio_player.play()
+
+func stop_audio():
+    if audio_player:
+        audio_player.stop()
+
+func _on_mouse_entered():
+    if hover_animation_player:
+        hover_animation_player.play("hover")
+
+func _on_mouse_exited():
+    if hover_animation_player:
+        hover_animation_player.stop()