Refactor env vars

[MikeLautensack]

Refactor the usage of env vars for urls/endpoints so the env var specifies the domain and not the path. This will allow for much less env vars and still can run it in different sub domains without changing source code.

Example

Before:

• NEXT_PUBLIC_USER_CREATE=http://localhost:3000/api/users/create
• NEXT_PUBLIC_USER_EDIT=http://localhost:3000/api/users/edit
• NEXT_PUBLIC_USER_DELETE_URL=http://localhost:3000/api/users/delete

after

• LOCALHOST=http://localhost:3000/
• PROD=http://estimate-generator.com/

[MikeLautensack]

Done