feat: support aggregate query

[rabbitz]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 41.02564% with 23 lines in your changes are missing coverage. Please review.

Project coverage is 64.83%. Comparing base (fdb16bf) to head (dc13d56).

Files	Patch %	Lines
app/models/suggest_query.rb	44.11%	19 Missing ⚠️
app/serializers/token_collection_serializer.rb	0.00%	4 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1790      +/-   ##
===========================================
- Coverage    64.98%   64.83%   -0.15%     
===========================================
  Files          333      334       +1     
  Lines         9047     9071      +24     
===========================================
+ Hits          5879     5881       +2     
- Misses        3168     3190      +22     

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