chore: add nuget package description

This also removes the description from the package readme. The desciption of the package is
shown on nuget.org in the list view and if no package readme is defined on the detail view of
a package version. Since we provide a package readme we do not need the description shown
twice.

src/request.result/Geekeey.Request.Result.csproj

@@ -16,6 +16,7 @@
 
   <PropertyGroup>
     <PackageReadmeFile>package-readme.md</PackageReadmeFile>
+    <PackageDescription>Simple result type implementation for C# with utilities for composing success and failure flows.</PackageDescription>
     <PackageIcon>package-icon.png</PackageIcon>
     <PackageProjectUrl>https://code.geekeey.de/geekeey/request/src/branch/main/src/request.result</PackageProjectUrl>
     <PackageLicenseExpression>EUPL-1.2</PackageLicenseExpression>

src/request.result/package-readme.md

@@ -1,6 +1,3 @@
-Result is a simple yet powerful [result type](https://doc.rust-lang.org/std/result/) implementation for C#, containing a
-variety of utilities and standard functions for working with result types and integrating them into the rest of C#.
-
 ## Features
 
 - **Success and Failure States:** Represent successful outcomes with a value (`Prelude.Success()`) or failures with an
@@ -57,4 +54,4 @@ _ = await Prelude.Try(() => File.ReadAllLines("i_do_not_exist.txt"))
       var results = await Task.WhenAll(list.Select(DoSomeThing).ToArray());
       return results.Join();
   });
-```
+```