Nbt editor

[LogGits]

Description of issue or feature request:

Ability to edit nbt info. E.g. edit the nbt info of a block you are looking at (e.g. spawners) or an entity you are looking at (e.g. modifying the inventory of a zombie).

Using ClickEvent and SUGGEST_COMMAND, to click and easily edit the text. Maybe it prints out a command for example /cmi nbtedit <attribute.with.dots.between.subcategories> <value> (it would paste textbox with attribute filled in already).