handle array qualifiers in filter

[rjawesome]

https://github.com/biothings/BioThings_Explorer_TRAPI/issues/598

[codecov[bot]]

Codecov Report

Merging #76 (37d79d1) into main (b426011) will increase coverage by 0.85%. The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main      #76      +/-   ##
==========================================
+ Coverage   86.18%   87.03%   +0.85%     
==========================================
  Files          30       30              
  Lines         731      733       +2     
  Branches      148      150       +2     
==========================================
+ Hits          630      638       +8     
+ Misses        100       94       -6     
  Partials        1        1              

Impacted Files	Coverage Δ
src/filter.ts	88.09% <0.00%> (+3.09%)	:arrow_up:

... and 2 files with indirect coverage changes

:mega: We’re building smart automated test selection to slash your CI/CD build times. Learn more