move FrenUtil from submodule to nuget

Author: mcmonkey4eva

.gitmodules

@@ -14,14 +14,8 @@
     <EmbeddedResource Include="**\*.resx" />
   </ItemGroup>
   <ItemGroup>
+    <PackageReference Include="FreneticLLC.FreneticUtilities" Version="1.0.1" />
     <PackageReference Include="Discord.Net" Version="3.7.2" />
     <PackageReference Include="Discord.Net.WebSocket" Version="3.7.2" />
   </ItemGroup>
-  <ItemGroup>
-    <Compile Remove="FreneticUtilities\*.*" />
-    <Compile Remove="FreneticUtilities\**\*.*" />
-  </ItemGroup>
-  <ItemGroup>
-    <ProjectReference Include="$(SolutionDir)FreneticUtilities\FreneticUtilities\FreneticUtilities.csproj" />
-  </ItemGroup>
 </Project>