chore: add maintainers as codeowners to all files

[PavelSBorisov]

Description:
Update CODEOWNERS to provide maintainers ownership of all files in their repos

Related issue(s):

Fixes #550

Notes for reviewer:
N/A

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

[github-actions]

Unit Test Results

35 tests  ±0   35 ✅ ±0   10m 25s ⏱️ -49s
21 suites ±0    0 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 6e091ab. ± Comparison against base commit 4da2182.

[github-actions]

E2E Test Results

4 tests  ±0   4 ✅ ±0   46s ⏱️ -6s
1 suites ±0   0 💤 ±0 
1 files   ±0   0 ❌ ±0 

Results for commit 6e091ab. ± Comparison against base commit 4da2182.

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.00% (target: -1.00%)	✅ ∅

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (4da2182)	1662	1094	65.82%
Head commit (6e091ab)	1662 (+0)	1094 (+0)	65.82% (+0.00%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#556)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.51%. Comparing base (4da2182) to head (6e091ab).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #556   +/-   ##
=======================================
  Coverage   65.51%   65.51%           
=======================================
  Files          60       60           
  Lines        1914     1914           
  Branches      291      289    -2     
=======================================
  Hits         1254     1254           
- Misses        624      659   +35     
+ Partials       36        1   -35     

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[andrewb1269hg]

Looks good.