Add project files too

Author: aurimasc

Tools/CI/UnityMobileNotifications-recipes.sln

@@ -0,0 +1,16 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UnityMobileNotifications.Cookbook", "UnityMobileNotifications.Cookbook.csproj", "{A5A71435-C891-4C78-989C-2713DAA7B3B8}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{A5A71435-C891-4C78-989C-2713DAA7B3B8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A5A71435-C891-4C78-989C-2713DAA7B3B8}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A5A71435-C891-4C78-989C-2713DAA7B3B8}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A5A71435-C891-4C78-989C-2713DAA7B3B8}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal

Tools/CI/UnityMobileNotifications.Cookbook.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <OutputType>Exe</OutputType>
+        <TargetFramework>net7.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <PackageReference Include="RecipeEngine.Modules.Wrench" Version="0.10.32" />
+    </ItemGroup>
+
+</Project>