airframe-sql internal: Add ResolveAgregationTest and ResolveTestHelper

[xerial]

[codecov]

Codecov Report

Merging #2658 (e3c4af3) into master (b5bbc28) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2658   +/-   ##
=======================================
  Coverage   82.17%   82.17%           
=======================================
  Files         334      335    +1     
  Lines       14019    14023    +4     
  Branches     2187     2212   +25     
=======================================
+ Hits        11520    11524    +4     
  Misses       2499     2499           

Impacted Files	Coverage Δ
...scala/wvlet/airframe/sql/parser/SQLFormatter.scala	100.00% <100.00%> (ø)

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