fix: cask and kegs

[omarcopires]

1. Now there will be no more errors when using empty flasks on incorrect fields.
2. The empty flasks will be sent to the store inbox instead of the backpack.

A mechanism to block the trade and movement of the potions in the store inbox still needs to be adjusted.

[Mirkaanks]

The flask used from the ground should also work.

[omarcopires]

The flask used from the ground should also work.

in my tests I was able to use them from the ground directly on the target, could you test with the latest changes?

[kaleohanopahala]

I noticed that you check if not charges then before removing the target. This probably isn't correct because charges will always be a number after being subtracted from flaskCount.
Also, you remove the target only if not charges, which doesn't seem correct since charges can be zero in some cases without requiring the target to be removed.

I believe that if the inbox has an issue or is full, it should be moved to the regular inventory, just like in the global environment.

[majestyotbr]

Is this ready for tests?

[omarcopires]

Is this ready for tests?

YES!

[phacUFPE]

Leaving as suggestion, beucase I think that this shouldn't be mandatory, it just simplify the usage of this feature and makes it like it is in Tibia Global.