setup.bat: junctions to SE Bin64 for portability

Setup (run before opening solution).bat

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+:: This script creates a symlink to the game binaries to account for different installation directories on different systems.
+
+@echo off
+set /p path="Please enter the folder location of your SpaceEngineers.exe or SpaceEngineersDedicated.exe: "
+
+cd %~dp0
+rmdir GameBinaries > nul 2>&1
+mklink /J GameBinaries "%path%"
+if errorlevel 1 goto Error
+echo Done!
+
+echo You can now open the plugin without issue.
+goto EndFinal
+
+:Error
+echo An error occured creating the symlink.
+goto EndFinal
+
+:EndFinal
+pause