Add item sound effects

[tagniam]

Edit: some sound effects are already implemented, like the sounds for attacking, bow and arrow attacks, and healing. However some sound effects are missing:

• Potion
• Bomb
• Whetstone
• Fleeing
• Buying things in the store
• Gambling

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The game would be a lot more fun with audio. In-game sound effects will be needed when the player uses the following items:

* Potion
* Whetstone
* Arrow
* Bomb

Make sure to credit where you get the sound effects from in the readme!

[ArighnaIITG]

I am working on the issue..Give me some time..