[Feature] Allow keyboard arrows to move up/down and Del key to remove read feeds in Two panels (Fox memory) renders tabs

[dauphine-dev]

In render tabs "Two panels (Fox memory)" :

• Implements same buttons management than in articles side panel.
• Use arrows keys to moving up and down in article list.
• Use delete key to mark the current article item as read/unread.

[dauphine-dev]

A new beta version with work in progress for this issue is available here : https://github.com/dauphine-dev/drop-feeds/releases/tag/1.0.14beta3

[dauphine-dev]

Done in https://github.com/dauphine-dev/drop-feeds/releases/tag/1.0.14beta4, waiting translation has been completed, to make it public in version 1.0.14 finale.