refactor WiiCompiled.Setup into WiiCompiled.Setup.Windows and add WiiCompiled.Setup.Common

the idea behind this is C# code that is OS agnostic can go in WiiCompiled.Setup.Common to be shared by any OS specific code (eg: WiiCompiled.Setup.Windows and WiiCompiled.Setup.Linux).

Launcher/WiiCompiled.Setup.Windows/WiiCompiled.Setup.Windows.csproj

@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <AssemblyName>WiiCompiled.Setup</AssemblyName>
+    <RootNamespace>WiiCompiled.Setup.Windows</RootNamespace>
+    <ApplicationManifest>app.manifest</ApplicationManifest>
+    <Version>0.2.24</Version>
+    <Authors>patchzy</Authors>
+    <Product>WiiCompiled</Product>
+    <Description>Command-line installer and launcher for WiiCompiled</Description>
+    <DebugType>embedded</DebugType>
+    <SatelliteResourceLanguages>en</SatelliteResourceLanguages>
+  </PropertyGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\WiiCompiled.Setup.Common\WiiCompiled.Setup.Common.csproj" />
+  </ItemGroup>
+</Project>