Update to new NuGet logo/license format

Author: paulirwin

src/F23.StringSimilarity/F23.StringSimilarity.csproj

@@ -11,8 +11,8 @@
     <Description>A .NET port of java-string-similarity.</Description>
     <Summary>A .NET port of java-string-similarity (https://github.com/tdebatty/java-string-similarity). A library implementing different string similarity and distance measures. Several algorithms (including Levenshtein edit distance and sibblings, Jaro-Winkler, Longest Common Subsequence, cosine similarity etc.) are currently implemented.</Summary>
     <PackageProjectUrl>https://github.com/feature23/StringSimilarity.NET</PackageProjectUrl>
-    <PackageLicenseUrl>https://raw.githubusercontent.com/feature23/StringSimilarity.NET/master/LICENSE</PackageLicenseUrl>
-    <PackageIconUrl>https://raw.githubusercontent.com/feature23/StringSimilarity.NET/master/logo.png</PackageIconUrl>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
+    <PackageIcon>logo.png</PackageIcon>
     <PackageRequireLicenseAcceptance>false</PackageRequireLicenseAcceptance>
     <PackageTags>string similarity distance cosine damerau jaccard jaro-winkler levenshtein ngram qgram shingle sift4</PackageTags>
     <PublishRepositoryUrl>true</PublishRepositoryUrl>
@@ -24,6 +24,9 @@
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All" />
   </ItemGroup>
 
+  <ItemGroup>
+    <None Include="logo.png" Pack="true" PackagePath="\" />
+  </ItemGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
     <DocumentationFile>bin\Release\netstandard2.0\F23.StringSimilarity.xml</DocumentationFile>