Add Country Information as seed data

[mahedee]

I'm submitting a...

[ ] Bug report  
[ ] Performance issue
[x] Feature request
[ ] Documentation issue or request
[ ] Other... Please describe:

Current behavior

Country name is required some other entities for example supplier. Currently there is no entity to store country name.

Expected behavior

There should be an entity name "Country" with two mandatory field like Id and Name(Country name). Since, it is one time entry so no need to develop user interface for this. Just add country name as seed data.

What is the motivation / use case for changing the behavior?

Because its required for some other entities like, suppliers.