feature: splits Client into Client.Core (AscensionGameDev#2399)

* started client fragmentation

* fix: change order of solution file so that disable-windows-editor.patch still applies

fix: delete unnecessary csproj

fix: change assembly attribute parameter from "Intersect.Client" (period) to "Intersect Client" (space)

* client started

* fix: files on wrong places

* remove unecessary changes

* redo the localization namespace name

* change root namespace of the client core

* redoing the hardcoded strings

* removed redundant namespace

* changed client core program to internal

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Co-authored-by: Robbie Lodico <[email protected]>

Author: WeylonSantana