feat: implement delete resource functionality 🕳️👨‍🦯

[Boris713]

Description ✏️

Closes #261

Describe what this PR does.

• Adds dropdown menu for selecting delete or copy link
• Created modal to confirm delete
• logic to delete item from database

Type of Change 🐞

• Feature - A non-breaking change which adds functionality.
• Fix - A non-breaking change which fixes an issue.
• Refactor - A change that neither fixes a bug nor adds a feature.
• Documentation - A change only to in-code or markdown documentation.
• Tests - A change that adds missing unit/integration tests.
• Chore - A change that is likely none of the above.

Checklist ✅

• I have done a self-review of my code.
• I have manually tested my code (if applicable).
• I have added/updated any relevant documentation (if applicable).

[tomas-salgado]

Great work @Boris713! I pushed a couple of changes that modify the UI of where we have delete. I changed the location to be within the 'Edit' modal, and I also modified the UI of the deletion confirmation modal. This was all just to match the pattern we use in deleting job offers (so we have consistently throughout the website).

Should be all set for @ramiAbdou, the only thing is I couldn't properly test when we delete resources with attachments (rather than URLs).

[ramiAbdou]

Tested the deletion of attachments, looks good! ✅