Fix error when saving contact details with an empty type

[pierredup]

Fixes #966

[what-the-diff]

PR Summary

• Inclusion of ContactTypeEntity in ContactDetailType.php
  The ContactTypeEntity from SolidInvoice\ClientBundle\Entity library has been incorporated in the ContactDetailType.php file for smoother handling of client contact details.

• New Constraint on Contact Detail Type field
  Now there's a constraint enforcing that the type field in contact details cannot be left blank. This ensures more uniformity in the databases by preventing incomplete information.

• Form Modification in 'contact_details.html.twig'
  The form has been altered from form_widget to form_row for the type field in 'contact_details.html.twig', changing how the user interacts with the form.

• Addition of form_errors in 'contacts.html.twig'
  Now, any errors encountered in the user form for contact details will be clearly visible to the user because of the addition of form_errors function.

• Addition of ContactType in EntityUuidTransformer.php
  ContactType from SolidInvoice\ClientBundle\Entity is now imported in EntityUuidTransformer.php for smoother data transformation related to contact types.

• Modification of transform Method in EntityUuidTransformer.php
  The transform method now checks if a given value is an instance of ContactType before returning its id, ensuring smoother data transformation and data integrity.

• Modification of reverseTransform Method in EntityUuidTransformer.php
  The reverseTransform method has been modified to return null if the given value is an empty string or null, further ensuring data integrity and streamlining data transformation process.

[codecov]

Codecov Report

Attention: 45 lines in your changes are missing coverage. Please review.

Comparison is base (5d115d0) 50.97% compared to head (33655c8) 50.76%.
Report is 17 commits behind head on 2.2.x.

Additional details and impacted files

@@             Coverage Diff              @@
##              2.2.x     #968      +/-   ##
============================================
- Coverage     50.97%   50.76%   -0.21%     
- Complexity     2229     2240      +11     
============================================
  Files           442      443       +1     
  Lines          8295     8340      +45     
============================================
+ Hits           4228     4234       +6     
- Misses         4067     4106      +39     

Flag	Coverage Δ
unittests	50.76% <27.41%> (-0.21%)	⬇️

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Files	Coverage Δ
src/ClientBundle/Form/Type/ContactDetailType.php	100.00% <100.00%> (ø)
...dle/Form/DataTransformer/EntityUuidTransformer.php	76.92% <100.00%> (ø)
src/InstallBundle/Listener/RequestListener.php	96.66% <100.00%> (ø)
src/InstallBundle/Listener/UpgradeListener.php	56.25% <100.00%> (ø)
src/MailerBundle/Factory/MailerConfigFactory.php	87.50% <100.00%> (-0.74%)	⬇️
src/SettingsBundle/SystemConfig.php	71.42% <100.00%> (ø)
src/CoreBundle/ConfigWriter.php	0.00% <0.00%> (ø)
src/CoreBundle/Repository/VersionRepository.php	36.84% <0.00%> (ø)
src/InstallBundle/Action/Install.php	0.00% <0.00%> (ø)
src/InstallBundle/Command/InstallCommand.php	0.00% <0.00%> (ø)
... and 4 more

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