Remove Nerdbank.GitVersioning and set version to 0.1.0-preview (#52)

Author: jeffhandley

Directory.Build.props

@@ -5,6 +5,7 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <IsPackable>false</IsPackable>
+    <PackageVersion>0.1.0-preview</PackageVersion>
     <RepoRoot>$([System.IO.Path]::GetFullPath('$(MSBuildThisFileDirectory)'))</RepoRoot>
     <VSTestLogger>trx%3bLogFileName=$(MSBuildProjectName).$(TargetFramework).$(OS).trx</VSTestLogger>
     <VSTestResultsDirectory>$(RepoRoot)/artifacts/TestResults</VSTestResultsDirectory>

Directory.Packages.props

@@ -19,7 +19,6 @@
 
     <!-- Build Infra & Packaging -->
     <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="8.0.0" />
-    <PackageVersion Include="Nerdbank.GitVersioning" Version="3.7.115" />
 
     <!-- Testing dependencies -->
     <PackageVersion Include="Anthropic.SDK" Version="4.7.1" />

src/Directory.Build.props

@@ -18,7 +18,6 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.SourceLink.GitHub" PrivateAssets="All" />
-    <PackageReference Include="Nerdbank.GitVersioning" PrivateAssets="All" />
   </ItemGroup>
 
   <ItemGroup>