Review minor project details

- Disable warning for missing doc comments for now.
- Specify specific version or System.Numerics.Vectors.
- Format fixes.

Raylib-cs/Raylib-cs.csproj

@@ -6,6 +6,7 @@
     <RootNamespace>Raylib_cs</RootNamespace>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
+    <NoWarn>$(NoWarn);1591</NoWarn>
   </PropertyGroup>
 
   <PropertyGroup>
@@ -32,6 +33,10 @@
     <None Include="../Logo/raylib-cs_64x64.png" Pack="true" PackagePath=""/>
   </ItemGroup>
 
+  <ItemGroup>
+    <PackageReference Include="System.Numerics.Vectors" Version="4.5.0"/>
+  </ItemGroup>
+
   <ItemGroup>
     <Content Include="runtimes/**" Link="runtimes/%(RecursiveDir)/%(Filename)%(Extension)">
       <PackagePath>runtimes/</PackagePath>