[DOP-14042] Improve Hive documentation

[dolfinus]

Change Summary

• Add Prerequisites section to Hive documentation, describing some config options required to access Hive metastore.
• Split up instructions about reading data using DBReader and Hive.sql, improve examples.
• Add recommendations about reading & writing data to Hive, e.g. using partitioning, compression, column-based file formats and so on.
• Add more examples to Executing statements section.

Related issue number

Checklist

• Commit message and PR title is comprehensive
• Keep the change as small as possible
• Unit and integration tests for the changes exist
• Tests pass on CI and coverage does not decrease
• Documentation reflects the changes where applicable
• docs/changelog/next_release/<pull request or issue id>.<change type>.rst file added describing change
  (see CONTRIBUTING.rst for details.)
• My PR is ready to review.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.77%. Comparing base (1f73652) to head (3ef5c3f).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #278      +/-   ##
===========================================
- Coverage    94.79%   94.77%   -0.03%     
===========================================
  Files          210      210              
  Lines         8187     8187              
  Branches      1410     1410              
===========================================
- Hits          7761     7759       -2     
- Misses         304      305       +1     
- Partials       122      123       +1     

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