[User story] Modal with deletion confirmation

[alexkisielewicz]

As a user, I want to see a deletion confirmation message when attempting to delete an item that I created, so that I can ensure that I intend to delete the item before proceeding.

Acceptance Criteria:

• The deletion confirmation message is shown in the user interface, providing a clear indication of the deletion action and the item being deleted.
• The user is presented with options to confirm or cancel the deletion operation.
• If the user confirms the deletion, the item is permanently removed from the database.
• If the user cancels the deletion, they are redirected to the last visited page without deleting the item.
• The deletion confirmation functionality is applied consistently for both post and comment deletion actions, ensuring a uniform user experience across the app.