Add linter for issue comments

[KrishnaSindhur]

Description

Closes #2733.

Readiness checklist

• I added/updated unit tests (and they pass).
• I added/updated integration/compatibility tests (and they pass).
• I added/updated comments and checked rendering.
• I made spot refactorings.
• I updated user documentation.
• I ran task all, and it passed.
• I ensured that PR title is good enough for the changelog.
• (for maintainers only) I set Reviewers (@FerretDB/core), Labels, Project and project's Sprint fields.
• I marked all done items in this checklist.

[codecov]

Codecov Report

Merging #3154 (ef3376d) into main (3d33c03) will decrease coverage by 49.28%.
The diff coverage is 14.63%.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #3154       +/-   ##
===========================================
- Coverage   75.43%   26.16%   -49.28%     
===========================================
  Files         396      396               
  Lines       22288    22300       +12     
===========================================
- Hits        16814     5834    -10980     
- Misses       4501    15911    +11410     
+ Partials      973      555      -418     

Files Changed	Coverage Δ
integration/setup/setup.go	75.84% <ø> (-3.94%)	⬇️
integration/setup/setup_compat.go	11.01% <ø> (-81.36%)	⬇️
integration/shareddata/faker.go	0.00% <0.00%> (ø)
internal/bson/datetime.go	67.85% <ø> (ø)
internal/clientconn/cursor/registry.go	39.81% <ø> (-51.86%)	⬇️
...l/handlers/common/aggregations/stages/collstats.go	0.00% <0.00%> (-85.00%)	⬇️
...ommon/aggregations/stages/projection/projection.go	0.00% <0.00%> (-86.98%)	⬇️
...ternal/handlers/common/aggregations/stages/sort.go	0.00% <ø> (-100.00%)	⬇️
internal/handlers/common/delete.go	0.00% <ø> (-100.00%)	⬇️
internal/handlers/common/filter.go	0.00% <0.00%> (-84.11%)	⬇️
... and 25 more

... and 195 files with indirect coverage changes

Flag	Coverage Δ
hana	?
integration	5.28% <0.00%> (-66.59%)	⬇️
mongodb	5.28% <0.00%> (-0.01%)	⬇️
pg	?
shard-1	5.28% <0.00%> (-51.39%)	⬇️
shard-2	?
shard-3	?
sqlite	?
unit	24.61% <15.00%> (-0.05%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

[noisersup]

Thanks for contribution! There are some small tweaks that I'd suggest to apply

[noisersup]

Good job! The linter seems to catch invalid TODOs, I have some suggessions, but apart from them it looks good to me!

Also, please run task fmt to format the code

[rumyantseva]

It's great to see the check implemented!

I see some TODOs were identified by the linter, and also the line/position of the detected problem is not reported. Is it for a separate PR?

[AlekSi]

Thank you!