tools: Add Auto-Install script

This scripts goal is to attempt to install the addons into the /garrysmod/addons/ directory of the installed Garry's Mod. This should make it massively simpler to quickly get started with modifying and creating your own version of the gamemode.

tools/autoinstall.bat

@@ -0,0 +1,18 @@
+@ECHO OFF
+CALL "env.win.bat"
+ECHO This script must be run as administrator, or will fail with unknown results.
+
+PUSHD "%GARRYSMODPATH%
+PUSHD "garrysmod"
+PUSHD "addons"
+ECHO Location: %CD%
+MKLINK /J prophuntextended "%REPO%source"
+MKLINK /J prophunt "%REPO%proxy"
+POPD
+REM PUSHD "gamemodes"
+REM ECHO Location: %CD%
+REM MKLINK /J prophuntextended "%REPO%source\gamemodes\prophuntextended"
+REM MKLINK /J prophunt "%REPO%proxy\gamemodes\prop_hunt"
+REM POPD
+POPD
+POPD