feat: Manual build pre-aggregations, getter for queue state, debug API

[RusovDmitriy]

Check List

• Tests has been run in packages where changes 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

Description of Changes Made (if issue reference is not provided)

Manual build pre-aggregations, getter for queue state, debug API

[codecov]

Codecov Report

Merging #3080 (1b1373c) into master (d7014a2) will decrease coverage by 0.36%.
The diff coverage is 9.23%.

@@            Coverage Diff             @@
##           master    #3080      +/-   ##
==========================================
- Coverage   59.98%   59.62%   -0.37%     
==========================================
  Files         117      117              
  Lines        9129     9191      +62     
  Branches     2014     2023       +9     
==========================================
+ Hits         5476     5480       +4     
- Misses       3371     3428      +57     
- Partials      282      283       +1     

Impacted Files	Coverage Δ
packages/cubejs-api-gateway/src/query.js	76.23% <ø> (ø)
...orchestrator/src/orchestrator/QueryOrchestrator.ts	70.11% <0.00%> (-1.65%)	⬇️
...ges/cubejs-server-core/src/core/OrchestratorApi.ts	25.37% <0.00%> (-1.19%)	⬇️
...es/cubejs-server-core/src/core/RefreshScheduler.ts	72.68% <0.00%> (-6.99%)	⬇️
...-query-orchestrator/src/orchestrator/QueryQueue.js	72.64% <6.25%> (-5.54%)	⬇️
packages/cubejs-api-gateway/src/gateway.ts	70.77% <11.76%> (-1.97%)	⬇️
...y-orchestrator/src/orchestrator/PreAggregations.ts	87.96% <33.33%> (-1.13%)	⬇️

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