Migrate fuzztool to Kong

[noisersup]

Description

This PR closes #1103.

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 (@FerretDB/core), Assignee, Labels, Project and project's Sprint fields.
• I marked all done items in this checklist.

[vercel]

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Name	Status	Preview	Updated
ferret-db	✅ Ready (Inspect)	Visit Preview	Sep 20, 2022 at 11:19AM (UTC)

[codecov]

Codecov Report

Merging #1159 (b3e23a4) into main (4507491) will increase coverage by 0.09%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1159      +/-   ##
==========================================
+ Coverage   66.22%   66.32%   +0.09%     
==========================================
  Files         250      250              
  Lines       12232    12232              
==========================================
+ Hits         8101     8113      +12     
+ Misses       3244     3233      -11     
+ Partials      887      886       -1     

Impacted Files	Coverage Δ
internal/util/version/version.go	55.00% <0.00%> (-5.00%)	⬇️
internal/handlers/common/filter.go	86.95% <0.00%> (+0.93%)	⬆️
internal/handlers/pg/pgdb/collections.go	56.92% <0.00%> (+4.61%)	⬆️

Flag	Coverage Δ
integration	62.41% <ø> (+0.04%)	⬆️
mongodb	14.81% <ø> (-0.01%)	⬇️
pg	51.84% <ø> (+0.04%)	⬆️
tigris	34.07% <ø> (-0.03%)	⬇️
unit	24.31% <ø> (+0.02%)	⬆️

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[rumyantseva]

Documentation is missing in one place + asked a couple of questions.

[AlekSi]

(for maintainers only) I set [...] project's Sprint fields.

It is not set

[noisersup]

@AlekSi The last thing is that I couldn't add the fuzz label, which is present in the issue.

Conform PR

[rumyantseva]

LGTM

[AlekSi]

The last thing is that I couldn't add the fuzz label, which is present in the issue.

fuzz label has the following description: Temporary label for issues about fuzzing

PR is not an issue.