Add growable write buffer

[maypok86]

Description

Added growable write buffer

Related issue(s)

• Resolves Add growable write buffer #66

✅ Checklist for your Pull Request

Related changes (conditional)

• Tests

  • If I added new functionality, I added tests covering it.
  • If I fixed a bug, I added a regression test to prevent the bug from
    silently reappearing again.

• Documentation

  • I checked whether I should update the docs and did so if necessary:
    • README

• Public contracts

  • My changes doesn't break project license.

Stylistic guide (mandatory)

• My code complies with the styles guide.

• My commit history is clean (only contains changes relating to my
  issue/pull request and no reverted-my-earlier-commit changes) and commit
  messages start with identifiers of related issues in square brackets.

  Example: [#42] Short commit description

  If necessary both of these can be achieved even after the commits have been
  made/pushed using rebase and squash.

Before merging (mandatory)

• Check target branch of PR is set correctly

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 94.02985% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 95.80%. Comparing base (f2b403b) to head (ed89a3c).

Files	Patch %	Lines
internal/queue/growable.go	94.82%	1 Missing and 2 partials ⚠️
internal/core/cache.go	88.88%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #67      +/-   ##
==========================================
- Coverage   96.10%   95.80%   -0.31%     
==========================================
  Files          23       23              
  Lines        1309     1310       +1     
==========================================
- Hits         1258     1255       -3     
- Misses         32       34       +2     
- Partials       19       21       +2     

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