Refactor publication page creation internals

[caendesilva]

Improves the integration between the new publication field classes and the make:publication command and fixes some bugs.

[codecov]

Codecov Report

Merging #793 (faa293b) into publications-feature (399badb) will increase coverage by 0.05%.
The diff coverage is n/a.

❗ Current head faa293b differs from pull request most recent head 6d26e9e. Consider uploading reports for the commit 6d26e9e to get more accurate results

@@                     Coverage Diff                     @@
##             publications-feature      #793      +/-   ##
===========================================================
+ Coverage                   99.94%   100.00%   +0.05%     
  Complexity                   1424      1424              
===========================================================
  Files                         174       174              
  Lines                        3581      3581              
===========================================================
+ Hits                         3579      3581       +2     
+ Misses                          2         0       -2     

Impacted Files	Coverage Δ
...rk/src/Console/Commands/MakePublicationCommand.php	100.00% <0.00%> (ø)
...rc/Console/Commands/Helpers/InputStreamHandler.php	100.00% <0.00%> (ø)
...rk/Features/Publications/PublicationFieldTypes.php	100.00% <0.00%> (+8.69%)	⬆️

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