move required classes out of \App into package; fix namespacing + class names

[dave-mills]

PR to fix issues with class names and name-spacing from the custom / team xlsform template classes.

[what-the-diff]

PR Summary

• Introduced New Widget Files:

  • available-templates-widget.blade.php - This new widget will be able to display all the existing templates of ODK and detail about them.
  • custom-odk-templates-widget.blade.php - This new widget will be able to display custom templates that are created specifically for the user's team.

• Enhanced ListTeamCustomXlsformTemplates.php:

  • The statement to use CustomOdkTemplatesWidget was added which is essential for making the above widget work properly.

• Optimized TeamXlsformTemplateResource.php:

  • Now it uses a config value instead of explicitly stating the owner_type, making the system more adaptive and flexible.
  • Modified it to use the page reference ListTeamXlsformTemplates.

• Adjusted ListTeamXlsformTemplates.php File Path:

  • Modified the namespace to adjust with the new structure as TeamXlsformTemplateResource.

• Created New Widget Classes:

  • AvailableOdkTemplatesWidget - This is the widget class that connects with the files previously mentioned to make the effective display of all the existing ODK templates.
  • CustomOdkTemplatesWidget - This widget class works with the files above to display custom templates.

• Refined Team.php:

  • Made it able to work with different user models, instead of previously only working with the User model.