Merge validating command features into base command

[caendesilva]

This is part one of this refactor, where I'm moving the commands within this branch, next I'll cherry pick the changes to master. I'm also doing some refactoring to the actual command class while I'm at it.

Edit: See #892

[codecov]

Codecov Report

Merging #891 (d1d695b) into publications-feature (9109367) will not change coverage.
The diff coverage is n/a.

❗ Current head d1d695b differs from pull request most recent head c27acf2. Consider uploading reports for the commit c27acf2 to get more accurate results

@@                   Coverage Diff                    @@
##             publications-feature      #891   +/-   ##
========================================================
  Coverage                  100.00%   100.00%           
  Complexity                   1615      1615           
========================================================
  Files                         174       174           
  Lines                        4010      4011    +1     
========================================================
+ Hits                         4010      4011    +1     

Impacted Files	Coverage Δ
.../src/Console/Commands/RebuildStaticSiteCommand.php
...ackages/framework/src/Console/Concerns/Command.php
...es/publications/src/Commands/ValidatingCommand.php
...mework/src/Framework/Actions/StaticPageBuilder.php
...framework/src/Console/Commands/MakePageCommand.php
...c/Framework/Features/Navigation/NavigationData.php
...kages/framework/src/Markdown/MarkdownConverter.php
...ork/src/Framework/Concerns/TracksExecutionTime.php
packages/framework/src/Foundation/HydeKernel.php
...ework/src/Console/Commands/BuildSitemapCommand.php
... and 338 more

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