Refactor packages of pg-index-health

[mfvanek]

Closes #465

Breaking changes in pg-index-health

1. Package io.github.mfvanek.pg.utils was renamed to io.github.mfvanek.pg.health.utils
2. Package io.github.mfvanek.pg.checks.cluster was renamed to io.github.mfvanek.pg.health.checks.cluster
3. Package io.github.mfvanek.pg.common.maintenance was renamed to io.github.mfvanek.pg.health.checks.common
4. Package io.github.mfvanek.pg.common.management was renamed to io.github.mfvanek.pg.health.checks.management

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (806b6f0) to head (e1fa23c).
Report is 1 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##              master      #506   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity      1054      1054           
===========================================
  Files            166       166           
  Lines           2239      2239           
  Branches         152       152           
===========================================
  Hits            2239      2239           

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