feat(server-core): Exponential backoff in refresh scheduler

[KSDaemon]

• add CUBEJS_PRE_AGG_BACKOFF_MAX_TIME env
• implement PreAggBackoff api in orchestrator pre-aggs
• impl backoff in refreshScheduler
• add tests

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 48.27586% with 15 lines in your changes missing coverage. Please review.
✅ Project coverage is 55.11%. Comparing base (1ea8fe4) to head (de00772).
⚠️ Report is 27 commits behind head on master.

Files with missing lines	Patch %	Lines
...y-orchestrator/src/orchestrator/PreAggregations.ts	0.00%	10 Missing ⚠️
...es/cubejs-server-core/src/core/RefreshScheduler.ts	77.77%	3 Missing and 1 partial ⚠️
packages/cubejs-backend-shared/src/env.ts	0.00%	1 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (1ea8fe4) and HEAD (de00772). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (1ea8fe4)	HEAD (de00772)
cubesql	1	0

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #10302       +/-   ##
===========================================
- Coverage   83.28%   55.11%   -28.17%     
===========================================
  Files         248      221       -27     
  Lines       74448    17233    -57215     
  Branches        0     3526     +3526     
===========================================
- Hits        62004     9498    -52506     
+ Misses      12444     7239     -5205     
- Partials        0      496      +496     

Flag	Coverage Δ
cube-backend	55.11% <48.27%> (?)
cubesql	?

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