feat(api-gateway): Introduce cache mode option for /cubesql API

[KSDaemon]

Check List

• Tests have 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

[codecov]

Codecov Report

❌ Patch coverage is 40.67797% with 35 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.11%. Comparing base (f556b62) to head (e097eb9).

Files with missing lines	Patch %	Lines
packages/cubejs-api-gateway/src/gateway.ts	18.18%	8 Missing and 1 partial ⚠️
rust/cubesql/cubesql/src/compile/engine/df/scan.rs	20.00%	8 Missing ⚠️
rust/cubesql/cubesql/src/transport/service.rs	37.50%	5 Missing ⚠️
...t/cubesql/cubeclient/src/models/v1_load_request.rs	0.00%	4 Missing ⚠️
...-query-orchestrator/src/orchestrator/QueryCache.ts	25.00%	3 Missing ⚠️
packages/cubejs-api-gateway/src/graphql.ts	33.33%	0 Missing and 2 partials ⚠️
...y-orchestrator/src/orchestrator/PreAggregations.ts	0.00%	2 Missing ⚠️
packages/cubejs-api-gateway/src/sql-server.ts	50.00%	1 Missing ⚠️
...ges/cubejs-server-core/src/core/OrchestratorApi.ts	80.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9972      +/-   ##
==========================================
- Coverage   77.13%   77.11%   -0.02%     
==========================================
  Files         440      440              
  Lines       89307    89348      +41     
  Branches     3101     3108       +7     
==========================================
+ Hits        68889    68905      +16     
- Misses      20029    20051      +22     
- Partials      389      392       +3     

Flag	Coverage Δ
cube-backend	48.75% <37.93%> (-0.02%)	⬇️
cubesql	83.23% <43.33%> (-0.02%)	⬇️

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[igorlukanin]

@KSDaemon Should we document what each option is supposed to do in the code? I feel like it might get lost in Jira/docs at some point 😄

[KSDaemon]

Well, why not...