Add Filter and feature files to Unity csproj

Add a linked Compile entry for Tools/Filter.cs and two dependent XML table classes (FeatureSetting.cs, Feature.cs) from the Maple2.File.Parser project into Maple2.File.Unity.csproj so the Unity project can use the parser's filter-related types and functionality.

Author: AngeloTadeucci

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

@@ -36,6 +36,11 @@
         <Compile Include="..\Maple2.File.Parser\Tools\HierarchyMap.cs" Link="Tools\HierarchyMap.cs" />
         <Compile Include="..\Maple2.File.Parser\Tools\ILEmitter.cs" Link="Tools\ILEmitter.cs" />
         <Compile Include="..\Maple2.File.Parser\Tools\Sanitizer.cs" Link="Tools\Sanitizer.cs" />
+        <Compile Include="..\Maple2.File.Parser\Tools\Filter.cs" Link="Tools\Filter.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" />
 
         <!-- MapParser and dependencies -->
         <Compile Include="..\Maple2.File.Parser\MapParser.cs" Link="MapParser.cs" />