Add win condition and related assets

Introduced new animations, prefabs, scripts, and textures to implement a win condition in the game. Updated InventoryScript to trigger the win state when the required coin count is reached. Added supporting assets such as win animations, GUI elements, and sound effects.

CollectCoins/Assets/Prefabs/fadeGUI.prefab.meta

@@ -0,0 +1,4 @@
+fileFormatVersion: 2
+guid: b01322d912e17d44c814d88ef127e376
+NativeFormatImporter:
+  userData: 

CollectCoins/Assets/Prefabs/loadingGUI.prefab.meta

@@ -0,0 +1,4 @@
+fileFormatVersion: 2
+guid: 1965ff6c0d80af944bc901679f9dac14
+NativeFormatImporter:
+  userData: 

CollectCoins/Assets/Prefabs/winGUI.prefab.meta

@@ -0,0 +1,4 @@
+fileFormatVersion: 2
+guid: 2ea5d18383bfbfd4188c3150f2fb812c
+NativeFormatImporter:
+  userData: