[net]build(nuget): add NuGet package readme and other info for Sails.…

…Net (#732)

net/src/Sails.Net/README.md

@@ -0,0 +1,22 @@
+Sails.Net
+=========
+
+A library providing and implementing low-level abstractions allowing to communicate with programs
+written using [Sails](https://github.com/gear-tech/sails?tab=readme-ov-file#sails-) framework.
+
+Although the library can be used independently, it offers a better experience when paired with
+[Sails.ClientGenerator](https://www.nuget.org/packages/Sails.ClientGenerator).
+
+### Usage
+
+Install the library, register `IRemotingProvider` implementation with `IServiceCollection`: 
+```csharp
+var serviceCollection = new ServiceCollection();
+serviceCollection.AddRemotingViaNodeClient(
+    new NodeClientOptions
+    {
+        GearNodeUri = new Uri("wss://testnet.vara.network"),
+    });
+```
+Inject `IRemotingProvider` into your services and use it to communicate with Sails programs.
+Discover how it can be achieved via exploring [tests](https://github.com/gear-tech/sails/tree/master/net/tests/Sails.Remoting.Tests).

net/src/Sails.Net/Sails.Net.csproj

@@ -2,8 +2,16 @@
 
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
+    <Description>Low-level abstractions for communicating with Sails programs</Description>
+    <PackageReadmeFile>README.md</PackageReadmeFile>
+    <PackageLicenseExpression>MIT OR Apache-2.0</PackageLicenseExpression>
+    <PackageTags>Sails, Vara, Gear, Substrate</PackageTags>
   </PropertyGroup>
 
+  <ItemGroup>
+    <None Include="README.md" Pack="true" PackagePath="\" />
+  </ItemGroup>
+
   <!-- Substrate.Gear.Api -->
   <ItemGroup>
     <PackageReference Include="Substrate.NET.API" />