Refactor packages in pg-index-health-model

[mfvanek]

Part of #465

Breaking changes:

1. BloatAware interface was moved from io.github.mfvanek.pg.model to io.github.mfvanek.pg.model.bloat
2. PgContext class was moved from io.github.mfvanek.pg.model to io.github.mfvanek.pg.model.context
3. DbObject interface was moved from io.github.mfvanek.pg.model to io.github.mfvanek.pg.model.dbobject
4. MemoryUnit enum was moved from io.github.mfvanek.pg.model to io.github.mfvanek.pg.units
5. AnyObject class was moved from io.github.mfvanek.pg.model.object to io.github.mfvanek.pg.model.dbobject (for better compatibility with Kotlin)
6. PgObjectType enum was moved from io.github.mfvanek.pg.model.object to io.github.mfvanek.pg.model.dbobject (for better compatibility with Kotlin)
7. IndexBloatAware interface was deleted
8. TableBloatAware interface was deleted
9. PgContext#enrichSequenceWithSchema method was deleted

[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 (ec36d9d) to head (c3d2494).
Report is 6 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##              master      #501   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
+ Complexity      1105      1054   -51     
===========================================
  Files            176       165   -11     
  Lines           2313      2240   -73     
  Branches         156       152    -4     
===========================================
- Hits            2313      2240   -73     

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