fix(core): change tooltip on delete button

[gabrieleAngius]

Describe the bug
The DelteButton component have an hardcoded tooltip, so regardless of where is used, it shows ever the same message.

To Reproduce
Steps to reproduce the behavior:

1. Run the widget
2. Simply hover on a Color slice

Expected behavior
On Colors, and later on Fonts and so on, the message should be different since they are not related to the Box component. We should create an tooltip enum on constants.ts and pass it to each delete button separately.