Add NpcParser and build script

Include NpcParser and its XML dependencies in the Unity project by adding Compile entries to Maple2.File.Unity.csproj (NpcParser.cs, Xml/Npc/*.cs and Xml/Common/StatValue.cs). Add build-unity-package.bat to provide a simple dotnet pack workflow that outputs the package to an artifacts directory and fails on build errors.

Author: AngeloTadeucci

Maple2.File.Unity/Maple2.File.Unity.csproj

@@ -38,6 +38,11 @@
         <Compile Include="..\Maple2.File.Parser\Tools\Sanitizer.cs" Link="Tools\Sanitizer.cs" />
         <Compile Include="..\Maple2.File.Parser\Tools\Filter.cs" Link="Tools\Filter.cs" />
 
+        <!-- NpcParser and dependencies -->
+        <Compile Include="..\Maple2.File.Parser\NpcParser.cs" Link="NpcParser.cs" />
+        <Compile Include="..\Maple2.File.Parser\Xml\Npc\*.cs" Link="Xml\Npc\%(Filename)%(Extension)" />
+        <Compile Include="..\Maple2.File.Parser\Xml\Common\StatValue.cs" Link="Xml\Common\StatValue.cs" />
+
         <!-- Filter dependencies (FeatureSetting, Feature) -->
         <Compile Include="..\Maple2.File.Parser\Xml\Table\FeatureSetting.cs" Link="Xml\Table\FeatureSetting.cs" />
         <Compile Include="..\Maple2.File.Parser\Xml\Table\Feature.cs" Link="Xml\Table\Feature.cs" />

build-unity-package.bat

@@ -0,0 +1,7 @@
+@echo off
+dotnet pack Maple2.File.Unity\Maple2.File.Unity.csproj -c Release -o artifacts
+if %errorlevel% neq 0 (
+    echo Build failed.
+    exit /b %errorlevel%
+)
+echo Package output to artifacts\