Merge pull request #1556 from StackExchange/craver/project-reorg1

One of several moves to make this something we can dev on all platforms and build on Actions for v3 onwards.

This leaves the main projects in the root, creating the following:
```
benchmarks\
    Dapper.Tests.Performance
    Directory.Build.props
tests\
    Dapper.Tests
    Dapper.Tests.Contrib
    Directory.Build.props
    Directory.Build.targets
```

Next step is getting `tests\docker-compose.yml` spun up for testing the various providers on GitHub Actions, but I'm having issues with this loaner laptop and the Docker restore from backup being in a screwy state.

Author: NickCraver

Build.csproj

@@ -1,5 +1,7 @@
 <Project Sdk="Microsoft.Build.Traversal/2.0.24">
   <ItemGroup>
-    <ProjectReference Include="*\*.csproj" />
+    <ProjectReference Include="benchmarks/**/*.csproj" />
+    <ProjectReference Include="*/*.csproj" />
+    <ProjectReference Include="tests/**/*.csproj" />
   </ItemGroup>
 </Project>

Dapper.sln

@@ -21,13 +21,13 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Dapper", "Dapper\Dapper.csp
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Dapper.StrongName", "Dapper.StrongName\Dapper.StrongName.csproj", "{549C51A1-222B-4E12-96F1-3AEFF45A7709}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Dapper.Tests", "Dapper.Tests\Dapper.Tests.csproj", "{052C0817-DB26-4925-8929-8C5E42D148D5}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Dapper.Tests", "tests\Dapper.Tests\Dapper.Tests.csproj", "{052C0817-DB26-4925-8929-8C5E42D148D5}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Dapper.Contrib", "Dapper.Contrib\Dapper.Contrib.csproj", "{4E409F8F-CFBB-4332-8B0A-FD5A283051FD}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Dapper.EntityFramework", "Dapper.EntityFramework\Dapper.EntityFramework.csproj", "{BE401F7B-8611-4A1E-AEAA-5CB700128C16}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Dapper.Tests.Contrib", "Dapper.Tests.Contrib\Dapper.Tests.Contrib.csproj", "{DAB3C5B7-BCD1-4A5F-BB6B-50D2BB63DB4A}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Dapper.Tests.Contrib", "tests\Dapper.Tests.Contrib\Dapper.Tests.Contrib.csproj", "{DAB3C5B7-BCD1-4A5F-BB6B-50D2BB63DB4A}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Dapper.SqlBuilder", "Dapper.SqlBuilder\Dapper.SqlBuilder.csproj", "{196928F0-7052-4585-90E8-817BD720F5E3}"
 EndProject
@@ -42,7 +42,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "tests", "tests", "{568BD46C
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Dapper.EntityFramework.StrongName", "Dapper.EntityFramework.StrongName\Dapper.EntityFramework.StrongName.csproj", "{39D3EEB6-9C05-4F4A-8C01-7B209742A7EB}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Dapper.Tests.Performance", "Dapper.Tests.Performance\Dapper.Tests.Performance.csproj", "{F017075A-2969-4A8E-8971-26F154EB420F}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Dapper.Tests.Performance", "benchmarks\Dapper.Tests.Performance\Dapper.Tests.Performance.csproj", "{F017075A-2969-4A8E-8971-26F154EB420F}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Dapper.ProviderTools", "Dapper.ProviderTools\Dapper.ProviderTools.csproj", "{B06DB435-0C74-4BD3-BC97-52AF7CF9916B}"
 EndProject

Directory.Build.props

@@ -36,6 +36,6 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.0" PrivateAssets="All" IncludeAssets="runtime; build; native; contentfiles; analyzers" />
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All"/>
-    <PackageReference Include="Nerdbank.GitVersioning" Version="3.1.74" PrivateAssets="all" />
+    <PackageReference Include="Nerdbank.GitVersioning" Version="3.3.37" PrivateAssets="all" />
   </ItemGroup>
 </Project>