[Hard][App] Move chat history out of the chat panel

[Fryingpannn]

Context

• Currently, previous chats created are all displayed within the same chat panel, and when opened, hides the current chat with no preview aside from chat title.
• We want to be able to see the current chat, and previews of the other chats when the user clicks or arrow keys on them.
• The previous chat history should be seen on a side panel when toggled, that way current chat isn't blocked.

Current look:

Solution

• Press CMD+o to show chat history (this shortcut command should be displayed right below the view history button (outside of tooltip)) so user can easily see.

• Chat history is displayed as separate panel on the left side of the chat.

• Pressing the up and down arrow keys on keyboard should scroll through the previous chats, allowing the user to choose.

  • This should also preview those chats in the chat panel. This task can optionally be in a separate PR.

Must find way to transport the current history UI into a separate window.

Example UI:

Image Video