Show data diffs in the function view

[dbalatoni13]

This is a feature request. Currently relocation diffs are show in the function view, data/rodata diffs are shown in the data view and you can hover over data load instructions to see what data gets loaded.

Porting a base game decomp to other versions involves changing a lot of float and data constants which I find would be much faster if the diffs could directly show up in the function, because you could spot them much easier.

[encounter]

Resolved in #153