Add .NET 10 support

- Added NET10_0 preprocessor condition to AssemblyLoadContext.cs
- Updated nng.NET.Shared.csproj to target both net9.0 and net10.0
- Updated nng.NET.csproj to target both net9.0 and net10.0

Author: Rafal Maciag

nng.NET.Shared/AssemblyLoadContext.cs

@@ -46,19 +46,21 @@ protected override Assembly Load(AssemblyName assemblyName)
             if (assemblyName.Name == managedAssemblyName)
             {
                 // Try framework-specific managed assembly path
-                var path = Path.Combine(assemblyPath, "runtimes", "any", "lib", 
+                var path = Path.Combine(assemblyPath, "runtimes", "any", "lib",
                     #if NETSTANDARD1_5
                     "netstandard1.5"
                     #elif NETSTANDARD2_0
                     "netstandard2.0"
                     #elif NETSTANDARD2_1
-                    "netstandard2.1"                    
+                    "netstandard2.1"
                     #elif NET5_0
                     "net5.0"
                     #elif NET6_0
-                    "net6.0"    
+                    "net6.0"
                     #elif NET9_0
-                    "net9.0"      
+                    "net9.0"
+                    #elif NET10_0
+                    "net10.0"
                     #else
                     #error "Unsupported framework?"
                     #endif

nng.NET.Shared/nng.NET.Shared.csproj

@@ -5,7 +5,7 @@
   <PropertyGroup>
     <!-- To enable code coverage -->
     <DebugType>full</DebugType>
-    <TargetFrameworks>net9.0;</TargetFrameworks>
+    <TargetFrameworks>net9.0;net10.0</TargetFrameworks>
   </PropertyGroup>
 
   <PropertyGroup>

nng.NET/nng.NET.csproj

@@ -10,7 +10,7 @@
     Assemblies for targetted frameworks are in runtimes/ instead of lib/ or ref/ 
     See: https://docs.microsoft.com/en-us/nuget/reference/errors-and-warnings/nu5128#scenario-2
     -->
-    <TargetFrameworks>net9.0;</TargetFrameworks>
+    <TargetFrameworks>net9.0;net10.0</TargetFrameworks>
   </PropertyGroup>
 
   <ItemGroup>