[CORE-2256] Backport hint fixes to 2.10

[robert-uhl]

Reworked paging and hints. Added a plethora of tests against a testing Loki instance. Worked with @pleeko to test expected vs. actual results.

[codecov]

Codecov Report

Attention: Patch coverage is 76.71233% with 17 lines in your changes are missing coverage. Please review.

Project coverage is 58.31%. Comparing base (6c0d400) to head (5c7086b).

Files	Patch %	Lines
src/server/logs/cmds/cmds.go	16.66%	10 Missing ⚠️
src/server/logs/logs.go	82.14%	5 Missing ⚠️
src/server/logs/query.go	91.30%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           2.10.x   #10012      +/-   ##
==========================================
+ Coverage   58.19%   58.31%   +0.12%     
==========================================
  Files         614      614              
  Lines       75590    75604      +14     
==========================================
+ Hits        43992    44091      +99     
+ Misses      31046    30958      -88     
- Partials      552      555       +3     

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