Allow to define the dynamic environment configurations anywhere in the same .env.config file

[suthagar23]

Depend on #14

In #14, Users have to define their dynamic environment configuration before the requirement environment keys. That's condition needs to be removed with this addition, and the user can able to define the dynamic environment configuration anywhere in the .env.config file.

E.g:

{
   "BFF_URL": "{{BASE_URL}}/api/v1",
   "BASE_URL" : "https://abc.com",
}