Rework solution structure to allow more types of library projects (#196)

* Rename avalonia & wpf samples

* Rename rest of samples

* fix sample readme

* Fix compat util tests

* rename / move all src projects

* remove package lock files and move libC# again

* Add rust lib and cargo workspace

* Replace locksmith lib with new filelocksmith-rs library

* Deprecated type

* fix setup compile

* Use thiserror for error handling

* Rename some enums and formatting

* Add missing SHA256

* wip c++ library

* cpp wip

* alphabetize readme

* Try to get build working again

* Fix some conditionally compiled bits

* cross config should be in workspace root

* Fix PathHelper for new rust target dir

* Missed one old path to velopack.csproj

* remove obsolete coverage code

* testawareapp.exe no longer exists

samples/CSharpUnityMono/BuildVisualStudioSolution/UnityMonoSample/UnityData.vcxitems

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(SolutionDir)UnityCommon.props" />
+  <PropertyGroup Label="Globals">
+    <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
+    <CodeSharingProject>E9D46EAF-A320-49FB-A167-2CBA56F910B2</CodeSharingProject>
+    <ItemsProjectGuid>{9CC07CB0-D6B5-4B2E-990C-F644CBC7AE58}</ItemsProjectGuid>
+    <HasSharedItems>true</HasSharedItems>
+  </PropertyGroup>
+  <ItemGroup>
+    <ClInclude Include="$(MSBuildThisFileDirectory)UnityConfiguration.gen.cpp"></ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectCapability Include="SourceItemsFromImports" />
+  </ItemGroup>
+</Project>