Cleaned the code and renamed some variables.
Added the following:
- 25% chance of a broken lockpick with a sound effect.
- Randomized metal sound effects (a bit aggressive, couldn't find better for now) when picking.
- Lockpicking sound when a combination is checked.
- 500 ms delay before refreshing the gump after a combination check to allow the view of all lifted pins.
- Safety checks in case the target is unreachable or deleted.
