Add NuGet package descriptions

- Add NuGet package description for each library.
- Add library-specific NuGet package tags.

Resolves #1812.

eng/Library.targets

@@ -28,7 +28,6 @@
     <NeutralLanguage>en-US</NeutralLanguage>
     <PackageLicenseExpression>BSD-3-Clause</PackageLicenseExpression>
     <PackageProjectUrl>https://github.com/App-vNext/Polly</PackageProjectUrl>
-    <PackageTags>Exception Handling Resilience Transient Fault Policy Circuit Breaker CircuitBreaker Retry Wait Cache Cache-aside Bulkhead Rate-limit Fallback Timeout Throttle Parallelization Hedging</PackageTags>
     <PackageReleaseNotes>See https://github.com/App-vNext/Polly/blob/main/CHANGELOG.md for details</PackageReleaseNotes>
     <PackageReadmeFile>package-readme.md</PackageReadmeFile>
   </PropertyGroup>

src/Polly.Core/Polly.Core.csproj

@@ -19,6 +19,11 @@
     <IsTrimmable>true</IsTrimmable>
   </PropertyGroup>
 
+  <PropertyGroup>
+    <Description>Polly.Core is a .NET resilience and transient-fault-handling library that allows developers to express resilience strategies such as Retry, Circuit Breaker, Hedging, Timeout, Chaos and Fallback in a fluent and thread-safe manner.</Description>
+    <PackageTags>Polly Simmy Exception Handling Resilience Transient Fault Policy Circuit Breaker CircuitBreaker Chaos ChaosEngineering Retry Wait Fallback Timeout Parallelization Hedging</PackageTags>
+  </PropertyGroup>
+
   <ItemGroup>
     <Using Include="Polly.Utils" />
     <InternalsVisibleToProject Include="Polly.Core.Benchmarks" />

src/Polly.Extensions/Polly.Extensions.csproj

@@ -16,6 +16,12 @@
     <IsAotCompatible>true</IsAotCompatible>
     <IsTrimmable>true</IsTrimmable>
   </PropertyGroup>
+
+  <PropertyGroup>
+    <Description>Polly.Extensions adds support for dependency injection and telemetry for the Polly.Core library.</Description>
+    <PackageTags>Polly Exception Handling Resilience Transient Fault Policy DI DependencyInjection IOC InversionOfControl Metrics Observability Telemetry</PackageTags>
+  </PropertyGroup>
+
   <ItemGroup>
     <Compile Include="..\Polly.Core\ResilienceValidationContext.cs" Link="Utils\ResilienceValidationContext.cs" />
     <Compile Include="..\Polly.Core\Utils\Guard.cs" Link="Utils\Guard.cs" />

src/Polly.RateLimiting/Polly.RateLimiting.csproj

@@ -17,6 +17,11 @@
     <IsTrimmable>true</IsTrimmable>
   </PropertyGroup>
 
+  <PropertyGroup>
+    <Description>Polly.RateLimiting is a .NET resilience and transient-fault-handling library that allows developers to express resilience strategies using a Rate Limiter in a fluent and thread-safe manner.</Description>
+    <PackageTags>Polly Exception Handling Resilience Transient Fault Policy Wait Bulkhead Rate-limit Throttle Hedging</PackageTags>
+  </PropertyGroup>
+
   <ItemGroup>
     <Using Include="Polly.Utils" />
     <Compile Include="..\Polly.Core\Utils\ExceptionUtilities.cs" Link="utils\ExceptionUtilities.cs" />

src/Polly.Testing/Polly.Testing.csproj

@@ -10,6 +10,11 @@
     <MutationScore>100</MutationScore>
   </PropertyGroup>
 
+  <PropertyGroup>
+    <Description>Polly.Testing exposes APIs and utilities that can be used to assert on the composition of Polly.Core resilience pipelines.</Description>
+    <PackageTags>Polly Exception Handling Resilience Transient Fault Policy Testing</PackageTags>
+  </PropertyGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\Polly.Core\Polly.Core.csproj" />
   </ItemGroup>

src/Polly/Polly.csproj

@@ -17,6 +17,11 @@
     <NoWarn>$(NoWarn);RS0037;</NoWarn>
   </PropertyGroup>
 
+  <PropertyGroup>
+    <Description>Polly is a .NET resilience and transient-fault-handling library that allows developers to express resilience and transient fault handling policies such as Retry, Circuit Breaker, Timeout, Bulkhead Isolation, and Fallback in a fluent and thread-safe manner.</Description>
+    <PackageTags>Polly Exception Handling Resilience Transient Fault Policy Circuit Breaker CircuitBreaker Retry Wait Cache Cache-aside Bulkhead Fallback Timeout Throttle</PackageTags>
+  </PropertyGroup>
+
   <ItemGroup>
     <InternalsVisibleToProject Include="Polly.Specs" />
   </ItemGroup>