Make DB id's nullable

src/Server/Entities/Company.cs

@@ -1,7 +1,7 @@
 namespace BoredCareers.Entities {
 
     public class Company {
-        public int ID { get; set; } // PK
+        public int? ID { get; set; } // PK
         public string Name { get; set; } = "";
         public string Email { get; set; } = "";
         public bool EmailVerified { get; set; } = false;
@@ -16,7 +16,7 @@ namespace BoredCareers.Entities {
     }
 
     public class Employee {
-        public int ID { get; set; } // PK
+        public int? ID { get; set; } // PK
         public int AccountID { get; set; } // FK
         public Company Company { get; set; } = new Company(); // FK
     }