Support comment and $comment update's arguments

[noisersup]

Description

This PR closes #487.

Readiness checklist

• I added tests for new functionality or bugfixes.
• I ran task all, and it passed.
• I added/updated comments for both exported and unexported top-level declarations (functions, types, etc).
• I checked comments rendering with task godocs.
• (for maintainers only) I set Reviewers, Assignee, Labels, Project and project's Sprint fields.
• I marked all done items in this checklist.

[codecov]

Codecov Report

Merging #937 (640d8f7) into main (9e5b193) will increase coverage by 0.12%.
The diff coverage is 73.91%.

@@            Coverage Diff             @@
##             main     #937      +/-   ##
==========================================
+ Coverage   62.00%   62.13%   +0.12%     
==========================================
  Files         228      228              
  Lines       10597    10610      +13     
==========================================
+ Hits         6571     6592      +21     
+ Misses       3251     3238      -13     
- Partials      775      780       +5     

Impacted Files	Coverage Δ
internal/handlers/pg/msg_update.go	49.09% <40.00%> (-1.86%)	⬇️
internal/handlers/pg/msg_findandmodify.go	76.78% <100.00%> (ø)
internal/handlers/pg/pgdb/pool.go	67.90% <100.00%> (+1.08%)	⬆️
internal/handlers/pg/msg_dbstats.go	65.11% <0.00%> (-6.98%)	⬇️
internal/util/version/version.go	55.00% <0.00%> (-5.00%)	⬇️
internal/handlers/tigris/msg_ismaster.go	86.95% <0.00%> (+86.95%)	⬆️

Flag	Coverage Δ
integration	56.83% <73.91%> (+0.12%)	⬆️
mongodb	18.61% <0.00%> (-0.04%)	⬇️
pg	61.57% <73.91%> (-0.08%)	⬇️
tigris	18.33% <0.00%> (+0.13%)	⬆️
unit	24.72% <0.00%> (-0.07%)	⬇️

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[seeforschauer]

LGTM except naming.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
2 out of 3 committers have signed the CLA.

✅ noisersup
✅ AlekSi
❌ Katerina Bletsch

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[w84thesun]

LGTM

[rumyantseva]

Last tiny correction is needed.

[rumyantseva]

LGTM