Move package versions and properties to central Directory props files

Co-authored-by: kamilbaczek <74410956+kamilbaczek@users.noreply.github.com>

Author: Copilot

Chapter-3-microservice-extraction/Directory.Build.props

@@ -0,0 +1,9 @@
+<Project>
+
+    <PropertyGroup>
+        <TargetFramework>net9.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+</Project>

Chapter-3-microservice-extraction/Directory.Packages.props

@@ -0,0 +1,10 @@
+<Project>
+  <PropertyGroup>
+    <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
+  </PropertyGroup>
+  <ItemGroup Label="Production">
+    <PackageVersion Include="Aspire.Hosting.AppHost" Version="9.0.0" />
+    <PackageVersion Include="Aspire.Hosting.PostgreSQL" Version="9.0.0" />
+    <PackageVersion Include="Aspire.Hosting.RabbitMQ" Version="9.0.0" />
+  </ItemGroup>
+</Project>

Chapter-3-microservice-extraction/Fitnet.AppHost/Fitnet.AppHost.csproj

@@ -2,16 +2,13 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net9.0</TargetFramework>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
     <IsAspireHost>true</IsAspireHost>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Aspire.Hosting.AppHost" Version="9.0.0" />
-    <PackageReference Include="Aspire.Hosting.PostgreSQL" Version="9.0.0" />
-    <PackageReference Include="Aspire.Hosting.RabbitMQ" Version="9.0.0" />
+    <PackageReference Include="Aspire.Hosting.AppHost" />
+    <PackageReference Include="Aspire.Hosting.PostgreSQL" />
+    <PackageReference Include="Aspire.Hosting.RabbitMQ" />
   </ItemGroup>
 
   <ItemGroup>