Managed addon now uses dotnet 10 by default and Windows 26100 (#182)

When using `winapp node create-addon` to create a managed add-on, the
resulting .csproj now uses this TFM by default:

```
<TargetFramework>net10.0-windows10.0.26100.0</TargetFramework>
```

This is just the default, the app dev can easily change it. We're
targeting Windows version 26100 by default because the AI APIs the API
projections use are supported there.

Author: JesseCol

samples/electron/csAddon/csAddon.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net8.0-windows10.0.19041.0</TargetFramework>
+    <TargetFramework>net10.0-windows10.0.26100.0</TargetFramework>
     <OutputType>Library</OutputType>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <AssemblyName>csAddon</AssemblyName>

samples/electron/package-lock.json

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net8.0-windows10.0.19041.0</TargetFramework>
+    <TargetFramework>net10.0-windows10.0.26100.0</TargetFramework>
     <OutputType>Library</OutputType>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <AssemblyName>{AddonName}</AssemblyName>

src/winapp-npm/cs-addon-template/AddonTemplate.csproj.template

@@ -8,7 +8,7 @@
     <PackageVersion Include="Microsoft.JavaScript.NodeApi.Generator" Version="0.9.17" />
 
     <!-- These versions may be updated automatically during restore to match yaml -->
-    <PackageVersion Include="Microsoft.WindowsAppSDK" Version="Run restore to set version before building" />
-    <PackageVersion Include="Microsoft.Windows.SDK.BuildTools" Version="Run restore to set version before building" />
+    <PackageVersion Include="Microsoft.WindowsAppSDK" Version="Run winapp restore to set version before building" />
+    <PackageVersion Include="Microsoft.Windows.SDK.BuildTools" Version="Run winapp restore to set version before building" />
   </ItemGroup>
 </Project>