[FEATURE] [Giveaways] Credits as Prize

[anasurimbor87]

Integrate economy credits as a prize As option: The Prize is what everyone puts in a entry cost. via --cost

For example: '--prizecredits 10000' could be a 10000 credit prize. --prize, --prizecredits and --prizecost would be mutual exclusive '--prizecost' would give out the sum of all the entry --cost. So 20 entries with a --cost 250 would give 5000 credits as prize.

[flaree]

i dont feel its neccesary to add this, just give them after