add offline packages

offline/packages/yamldotnet/9.1.0/YamlDotNet.nuspec

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<package xmlns="http://schemas.microsoft.com/packaging/2013/01/nuspec.xsd">
+  <metadata minClientVersion="2.8">
+    <id>YamlDotNet</id>
+    <version>9.1.0</version>
+    <authors>Antoine Aubry</authors>
+    <requireLicenseAcceptance>false</requireLicenseAcceptance>
+    <license type="file">LICENSE.txt</license>
+    <licenseUrl>https://aka.ms/deprecateLicenseUrl</licenseUrl>
+    <projectUrl>https://github.com/aaubry/YamlDotNet/wiki</projectUrl>
+    <iconUrl>http://aaubry.net/images/yamldotnet.png</iconUrl>
+    <description>A .NET library for YAML. YamlDotNet provides low level parsing and emitting of YAML as well as a high level object model similar to XmlDocument.</description>
+    <summary>This package contains the YAML parser and serializer.</summary>
+    <language>en-US</language>
+    <tags>yaml parser development library serialization</tags>
+    <repository type="git" url="https://github.com/aaubry/YamlDotNet.git" />
+  </metadata>
+</package>