Replace custom boolean validation rule with input normalizing

[caendesilva]

A short story about solving the right problem

Realized I was trying to solve the wrong problem.

The problem

The problem is/was that when using the boolean validation rule from Laravel, the input type must be a boolean. However, the Symfony console input always returns a string. So if you write true to the console, it is interpreted as "true", which never validates.

The wrong solution

So, I create a custom validation rule to handle booleans. No big deal, but that adds a lot of extra code and possible incompatibility issues.

The (I hope) right solution

Well, the problem is that Laravel expects a certain type right? So why not just convert the input to that type? Well, that's what this PR does. I think it's much more elegant.

[codecov]

Codecov Report

Merging #835 (ee0847d) into publications-feature (d771ae7) will increase coverage by 0.02%.
The diff coverage is n/a.

❗ Current head ee0847d differs from pull request most recent head 855f44c. Consider uploading reports for the commit 855f44c to get more accurate results

@@                     Coverage Diff                     @@
##             publications-feature      #835      +/-   ##
===========================================================
+ Coverage                   99.97%   100.00%   +0.02%     
+ Complexity                   3064      1534    -1530     
===========================================================
  Files                         344       172     -172     
  Lines                        7648      3826    -3822     
===========================================================
- Hits                         7646      3826    -3820     
+ Misses                          2         0       -2     

Impacted Files	Coverage Δ
...es/publications/src/Commands/ValidatingCommand.php
...rk/src/Framework/Factories/Concerns/HasFactory.php
...rk/src/Console/Commands/PackageDiscoverCommand.php
...amework/src/Framework/Services/MarkdownService.php
packages/framework/src/Facades/Route.php
packages/publications/src/PublicationService.php
...framework/src/Console/Commands/MakePageCommand.php
...kages/framework/src/Markdown/MarkdownConverter.php
...ework/src/Framework/Services/ValidationService.php
packages/framework/src/Support/Facades/Render.php
... and 163 more

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