Rework on migration UI

[xdeiimoss]

Describe your suggested feature

Instead of using an overflow menu, add icons representing each one of the options in the side where's oveflow menu, displaying each one of them vertically.
The first one being the search icon, second an X icon, third an checkmark icon and fourth a content copy icon
Also maybe use the same thing that shows the number of items in the library to display the amount of entries being migrated: "Migration (1/1)"

Other details

Acknowledgements

• I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open or closed issue.
• I have written a short but informative title.
• If this is an issue with an official extension, I should be opening an issue in the extensions repository.
• I have updated the app to version 1.12.1.
• I will fill out all of the requested information in this form.