Username & InventoryViewer Improvement

[MellDa1024]

Describe the pull

Username fix

(Fixes 1-space blank when prefix or suffix is defined with blank)

Improved InventoryViewer, especially enderchest part.

Fixed EnderChest Desync Problem(Desyncs when player close ender chest and moves item at same time) with using CPacketCloseWindow Listener.

Now catches Ender chest in any language(original method didn't work when player had different langauge setting) with using TextComponentTranslation.key instead of name(This method needed to use SPacketOpenWindow).

Describe how this pull is helpful
better Performance

Additional context
well It's the first time that i'm opening the pull request, idk am i doing right but anyways
and I couldn't find the part that could cause bug but didn't test on high-ping(i don't know the high-ping environment has a potential power that could cause error, but anyways)

[Avanatiker]

thanks for your contribution :) can you allow maintainers to push on your branch? i wanna push smol refactoring

[MellDa1024]

Well I'm sorry for saying this but how can i allow it? I'm really new wth this type of job

[mmvanheusden]

That's the most professional first pull request i've ever seen. Hats off!