Add PackageLicenseExpression

Author: lahma

src/Glob/Glob.csproj

@@ -10,6 +10,7 @@
     <Description>A C# Glob library for .NET and .NET Core.</Description>
     <PackageReleaseNotes>https://github.com/kthompson/glob/blob/main/ChangeLog.md</PackageReleaseNotes>
     <PackageProjectUrl>https://github.com/kthompson/glob/</PackageProjectUrl>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <PackageLicense>
       The MIT License (MIT)