Add build script for command line compilation

build.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# Set your 7DTD installation path
+GAME_DIR="${GAME_DIR:-$HOME/.local/share/7DaysToDie}"
+
+mcs -target:library \
+    -out:BotCommandMod.dll \
+    -r:"$GAME_DIR/7DaysToDie_Data/Managed/Assembly-CSharp.dll" \
+    -r:"$GAME_DIR/7DaysToDie_Data/Managed/UnityEngine.CoreModule.dll" \
+    -r:"$GAME_DIR/7DaysToDie_Data/Managed/0Harmony.dll" \
+    Harmony/BotCommandPatch.cs