Rename WebApi project to Vegasco.Server.Api

And update all references including comments etc.

src/Vegasco.Server.Api/Users/User.cs

@@ -0,0 +1,10 @@
+using Vegasco.Server.Api.Cars;
+
+namespace Vegasco.Server.Api.Users;
+
+public class User
+{
+	public string Id { get; set; } = "";
+
+	public virtual IList<Car> Cars { get; set; } = [];
+}