Fix nation stats viewer tooltip from only displaying one creator per demon

[jasonyess]

Fixed the created_in function only retrieving one creator per demon. In the previous SQL statement, every retrieved demon was unique, causing this to happen:

Removing the DISTINCT ON statement allowed multiple creators of the same demon to be retrieved:

Resolves #178

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 29.61%. Comparing base (d0b0dc8) to head (b9b25da).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
pointercrate-demonlist/src/nationality/get.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #205   +/-   ##
=======================================
  Coverage   29.61%   29.61%           
=======================================
  Files         116      116           
  Lines        8314     8314           
=======================================
  Hits         2462     2462           
  Misses       5852     5852           

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[stadust]

Hi! Thanks for looking into this. No idea why I put a distinct on here, maybe a copy-paste error? I think it does need an order by as well though: