Make Count Queries Parallel

[alexanderkiel]

In this first step only queries with one search param are executed in parallel.

[codecov]

Codecov Report

Merging #998 (1bfb10b) into develop (9c1ea38) will increase coverage by 0.01%.
The diff coverage is 99.16%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #998      +/-   ##
===========================================
+ Coverage    94.17%   94.19%   +0.01%     
===========================================
  Files          238      238              
  Lines        15112    15197      +85     
  Branches       372      374       +2     
===========================================
+ Hits         14232    14315      +83     
  Misses         508      508              
- Partials       372      374       +2     

Impacted Files	Coverage Δ
modules/db/src/blaze/db/impl/search_param/util.clj	98.87% <96.42%> (-1.13%)	⬇️
...assandra/src/blaze/db/resource_store/cassandra.clj	98.00% <100.00%> (ø)
...-resource-store/src/blaze/db/resource_store/kv.clj	100.00% <100.00%> (ø)
modules/db/src/blaze/db/api.clj	83.33% <100.00%> (+0.29%)	⬆️
modules/db/src/blaze/db/impl/batch_db.clj	84.12% <100.00%> (+0.12%)	⬆️
modules/db/src/blaze/db/impl/db.clj	77.14% <100.00%> (+0.67%)	⬆️
modules/db/src/blaze/db/impl/index.clj	98.52% <100.00%> (+0.28%)	⬆️
modules/db/src/blaze/db/impl/search_param.clj	100.00% <100.00%> (ø)
...ules/db/src/blaze/db/impl/search_param/chained.clj	94.82% <100.00%> (-1.61%)	⬇️
.../db/impl/search_param/composite/token_quantity.clj	97.14% <100.00%> (+0.26%)	⬆️
... and 10 more