Add missing foreign keys to fix #545

[rmartinoscar]

• [x] Make name & env_variables unique for each egg

Throws a 500 if you try to add a duplicate

[rmartinoscar]

@Boy132 sqlite tests are still failling

[Boy132]

@Boy132 sqlite tests are still failling

I found the reason: the sort for the bungeecord variables is null. For all other eggs the sort is filled.

[notAreYouScared]

@RMartinOscar Can you merge main, and see if the tests pass?

[lancepioch]

We should programmatically enforce this instead, I think sqlite has an issue with composite unique keys.