Inlude Option to Define Size of Lunch Bag and Box

[pauloelr]

Inlcude a configuration option where you can define the number of distinct itens you can store on the lunch bag and lunch box

Issue #140

[pauloelr]

Note: I was not able to properly test it on game because I am not a Java programmer and had not the environment properly configured to compile the code, but gradle build went successfully so i think everything is OK, in case it is not OK please let me know and I make any necessary changes