chore(cubesql): MetaContext - track create_at datetime

[ovr]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.76%. Comparing base (bb13b09) to head (b9e30d5).
Report is 5 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #9355   +/-   ##
=======================================
  Coverage   83.76%   83.76%           
=======================================
  Files         229      229           
  Lines       82696    82697    +1     
=======================================
+ Hits        69267    69268    +1     
  Misses      13429    13429           

Flag	Coverage Δ
cubesql	83.76% <100.00%> (+<0.01%)	⬆️

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