ENH: add core_nt Kraken 2 DB to the list of allowed databases

[misialq]

Closes #223.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.50%. Comparing base (b6d068a) to head (101e4ec).
Report is 12 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #228      +/-   ##
==========================================
- Coverage   95.60%   95.50%   -0.10%     
==========================================
  Files          34       34              
  Lines        1956     1980      +24     
  Branches      226      231       +5     
==========================================
+ Hits         1870     1891      +21     
- Misses         48       49       +1     
- Partials       38       40       +2     

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[misialq]

Any news on this one @VinzentRisch?

[VinzentRisch]

Good morning Michal
Im sorry, Ive still been running tests for busco. But Im gonna do this today.

[misialq]

Merging after having tested successfully.