feat(api-gateway): Support query timezone in /cubesql API endpoint

[KSDaemon]

• openapi spec: add timezone to request
• pass query timezone through cubesql into cube.js

Check List

• Tests have been run in packages where changes have been made if available
• Linter has been run for changed code
• Tests for the changes have been added if not covered yet
• Docs have been added / updated if required

[codecov]

Codecov Report

❌ Patch coverage is 84.61538% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.93%. Comparing base (bfe951c) to head (b7ba867).
⚠️ Report is 6 commits behind head on master.

Files with missing lines	Patch %	Lines
packages/cubejs-api-gateway/src/sql-server.ts	0.00%	1 Missing ⚠️
rust/cubesql/cubesql/src/compile/builder.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #10189       +/-   ##
===========================================
+ Coverage   54.62%   77.93%   +23.30%     
===========================================
  Files         214      461      +247     
  Lines       17012    91253    +74241     
  Branches     3475     3476        +1     
===========================================
+ Hits         9293    71114    +61821     
- Misses       7218    19639    +12421     
+ Partials      501      500        -1     

Flag	Coverage Δ
cube-backend	54.62% <50.00%> (+<0.01%)	⬆️
cubesql	83.27% <90.90%> (?)

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