WIP: First stab at allowing semi-colons for importer delimiter

[snipe]

This is a WIP for #15542. Definitely not ready for testing yet. :( This Livewire stuff is nasty.

Todo:

• Translate the text comma, semicolon, etc to actual symbols

[what-the-diff]

PR Summary

• Improved File Import Flexibility:
  • Changes to the ImportController.php and Importer.php allow setting a custom delimiter during CSV file imports. This makes the import process more adaptable to different file formats.
• Improved User Experience:
  • Updates to importer.blade.php allow users to select the delimiter before submitting their file. This offers a more intuitive and user-friendly interface.
• Enhanced Layout Organization and Responsiveness:
  • Changes to the HTML structure in importer.blade.php have improved the layout's organization and responsiveness, making the webpage easier to interact with.
• Code Quality Improvements:
  • Minor but essential cleanup and formatting changes in backups.blade.php created a cleaner and more readable codebase.