diff component for comparing differences

[Zoramite]

Create a diff component that can be used to show the differences between native complex types such as structs and arrays.

Should return a struct with two keys: old and new.

• Exists in the old & not exists in the new: deleted item
• Exists in the new & not exists in the old: new item
• Exists in both old & new: value has changed

[Zoramite]

Added the toHtml function for giving a diff in an html format.

Closed by bef039055c9036baadc51086ba8aafd82ad5cbf3