Fix Aspire workload deprecation and code formatting issues

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

Author: Copilot

Chapter-4-applying-tactical-domain-driven-design/Fitnet.Contracts/Src/Fitnet.Contracts.AppHost/Fitnet.Contracts.AppHost.csproj

@@ -2,7 +2,6 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <IsAspireHost>true</IsAspireHost>
   </PropertyGroup>
 
   <ItemGroup>

Chapter-4-applying-tactical-domain-driven-design/Fitnet/Src/Fitnet.AppHost/Fitnet.AppHost.csproj

@@ -2,7 +2,6 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <IsAspireHost>true</IsAspireHost>
   </PropertyGroup>
 
   <ItemGroup>

Chapter-4-applying-tactical-domain-driven-design/Fitnet/Src/Offers/Fitnet.Offers.DataAccess/Database/Migrations/20230503180337_CreateOffersTable.cs

@@ -1,6 +1,7 @@
 #nullable disable
 
 namespace SuperSimpleArchitecture.Fitnet.Migrations.OffersPersistenceMigrations;
+
 using System;
 using System.Diagnostics.CodeAnalysis;
 using Microsoft.EntityFrameworkCore.Migrations;

Chapter-4-applying-tactical-domain-driven-design/Fitnet/Src/Passes/Fitnet.Passes.DataAccess/Database/Migrations/20230503180338_CreatePassesTable.cs

@@ -1,6 +1,7 @@
 #nullable disable
 
 namespace EvolutionaryArchitecture.Fitnet.Passes.DataAccess.Database;
+
 using System;
 using Microsoft.EntityFrameworkCore.Migrations;