Refactor package versions and central management

Updated `Microsoft.EntityFrameworkCore` and `Npgsql` package versions to conditionally target `net8.0` and `net9.0`. Added `Microsoft.EntityFrameworkCore.Tools` with framework-specific conditions. Removed `Npgsql.EntityFrameworkCore.PostgreSQL` reference from `Codebreaker.Data.Postgres.csproj`. Removed `<Project>` element and disabled central package management in `Directory.Packages.props`.

Author: christiannagel

src/Directory.Packages.props

@@ -73,8 +73,12 @@
     <PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="9.0.9" />
     <PackageVersion Include="Microsoft.Extensions.ServiceDiscovery" Version="9.4.2" />
     <PackageVersion Include="Microsoft.Extensions.ServiceDiscovery.Yarp" Version="9.4.2" />
-    <PackageVersion Include="Microsoft.EntityFrameworkCore.Cosmos" Version="9.0.9" />
-    <PackageVersion Include="Microsoft.EntityFrameworkCore.SqlServer" Version="9.0.9" />
+    <PackageVersion Include="Microsoft.EntityFrameworkCore.Cosmos" Version="8.0.11" Condition="'$(TargetFramework)' == 'net8.0'" />
+    <PackageVersion Include="Microsoft.EntityFrameworkCore.Cosmos" Version="9.0.9" Condition="'$(TargetFramework)' == 'net9.0'" />
+    <PackageVersion Include="Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.11" Condition="'$(TargetFramework)' == 'net8.0'" />
+    <PackageVersion Include="Microsoft.EntityFrameworkCore.SqlServer" Version="9.0.9" Condition="'$(TargetFramework)' == 'net9.0'" />
+    <PackageVersion Include="Microsoft.EntityFrameworkCore.Tools" Version="8.0.11" Condition="'$(TargetFramework)' == 'net8.0'" />
+    <PackageVersion Include="Microsoft.EntityFrameworkCore.Tools" Version="9.0.9" Condition="'$(TargetFramework)' == 'net9.0'" />
     <PackageVersion Include="Microsoft.FluentUI.AspNetCore.Components" Version="4.12.1" />
     <PackageVersion Include="Microsoft.FluentUI.AspNetCore.Components.Icons" Version="4.12.1" />
     <PackageVersion Include="Microsoft.Graph" Version="5.92.0" />
@@ -91,7 +95,8 @@
     <PackageVersion Include="NUnit" Version="4.4.0" />
     <PackageVersion Include="NUnit.Analyzers" Version="4.10.0" />
     <PackageVersion Include="NUnit3TestAdapter" Version="5.1.0" />
-    <PackageVersion Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.0.4" />
+    <PackageVersion Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="8.0.11" Condition="'$(TargetFramework)' == 'net8.0'" />	
+    <PackageVersion Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.0.4" Condition="'$(TargetFramework)' == 'net9.0'" />
     <PackageVersion Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.12.0" />
     <PackageVersion Include="OpenTelemetry.Exporter.Prometheus.AspNetCore" Version="1.10.0-beta.1" />
     <PackageVersion Include="OpenTelemetry.Extensions.Hosting" Version="1.12.0" />

src/services/common/Codebreaker.Data.Postgres/Codebreaker.Data.Postgres.csproj

@@ -20,9 +20,6 @@
 
   <ItemGroup>
     <PackageReference Include="CNinnovation.Codebreaker.BackendModels" />
-  </ItemGroup>
-
-  <ItemGroup>
 		<PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" />	
   </ItemGroup>