feat: show widget preview for eDrive in BlissLauncher3

Description

Display a preview for eDrive in BL3 in the addition screen.

Screenshots

Before

No widget preview and a smaller touch target in the ⚙ icon, copy, and Hide aliases buttons in the eDrive widget.

After

The eDrive widget preview is shown. Improved touch target for the ⚙ icon, copy, and Hide aliases buttons.

Technical details

This commit adds a preview layout to the eDrive widget while adding it from BlissLauncher 3. It also includes changes to the design layout of the e-drive widget so that the touch target of the widget gets bigger.

Tests

Issues

Issue link: https://gitlab.e.foundation/e/os/backlog/-/issues/2010

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