A chaotic christmas gift update

This Christmas update adds a little gift feature that allows you to spice up the game data without knowing how it works

(It's also a way for me to unwind during the holidays while working on the software)

A randomization button, when is clicked, the map data (initially supported by the software) will be modified randomly,
a fun way to experiment with map modifications

(Randomization function requires there may be bugs although I did my best to avoid them)

in addition to adding this feature, the latter fixes two bugs that appeared with version 0.0.3

one being in the object bag editor and the other in the hidden block editor