fix: adds local copy of revitapiifc.dll

Author: teocomi

SampleLibrary/RevitAPIIFC.dll

@@ -41,8 +41,9 @@
     <Reference Include="RevitAPI, Version=21.0.0.0, Culture=neutral, processorArchitecture=AMD64">
       <HintPath>..\packages\ModPlus.Revit.API.2021.1.0.0\lib\RevitAPI.dll</HintPath>
     </Reference>
-    <Reference Include="RevitAPIIFC">
-      <HintPath>..\..\..\..\Program Files\Autodesk\Revit 2021\RevitAPIIFC.dll</HintPath>
+    <Reference Include="RevitAPIIFC, Version=21.0.0.0, Culture=neutral, processorArchitecture=AMD64">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>.\RevitAPIIFC.dll</HintPath>
     </Reference>
     <Reference Include="RevitAPIUI, Version=21.0.0.0, Culture=neutral, processorArchitecture=AMD64">
       <HintPath>..\packages\ModPlus.Revit.API.2021.1.0.0\lib\RevitAPIUI.dll</HintPath>