Adjust the submit resource form

[gheorghelupu17]

Summary

• Submission guidelines list the five review rules, including subtitles and sign language for video.
• The form collects organization details, counties, contact data, resource type, language, creation date, category, audience, tags, credentials, files, and notes.
• Uploaded files stay on the private local disk.

Depends on #33 for the five resource types shown in the type field.

Closes #17

Test plan

• Open /ro/submit and confirm the guidelines and the new fields.
• Submit a valid resource and confirm the success state.
• php artisan test --compact tests/Feature/SubmitResourceTest.php

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