Add Keyboard navigation on IconPicker

[charlesBochet]

Scope & Context

Recently, we had introduced a re-usable SelectableList component which used in CommandMenu. It provides a simple way to track which item is selected with keyboard.
Right now it only support one dimension (arrow up and down) but we would like to:

• extend it to be 2-dimensions
• use it to add arrow selection on IconPicker

Current behavior

On the IconPicker, it is not possible to select an icon using the keyboard (arrow up, down, left, right)

Expected behavior

On the IconPicker, is is possible to select an icon using the keyboard

Technical inputs

• Improve SelectableList API to support 2 dimensions selectableItemIds (string[] => string[][])
• improve SelectableList API to pass the Hotkeyscope (right now we have hardcoded CommandMenu one)
• use it within IconPicker

[gitstart-app]

Here is the GitStart Ticket for this issue: https://clients.gitstart.com/twenty/5449/tickets/TWNTY-2746