CTRL+S shortcut to save scenes and code editor

[m-alexparent]

CTRL+S can now be used to save code editor files and learning scenes
It will only save the active tab according to the maincontainer class, a.k.a. the last one that has been clicked on or interacted with (with the exception of click-dragging on a scene, which does not give "focus" to its tab)

Linked to #86

[Copilot]

Pull Request Overview

This PR implements a CTRL+S shortcut to save both learning scenes and code editor files by dispatching and handling a custom 'saveFileEvent'.

• In workflow.jsx, the toast messages now include the scene name when saving.
• In mainContainerClass.tsx, a new keydown handler dispatches the save event for the active tab.
• In codeEditor.jsx, toast messages and event listener logic have been updated similarly to incorporate file names.

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
renderer/components/learning/workflow.jsx	Updated toast messages to include scene names and added a useEffect to listen for the custom save event.
renderer/components/layout/flexlayout/mainContainerClass.tsx	Added a handleSaveTab method for CTRL+S shortcut and ensured proper event listener removal.
renderer/components/flow/codeEditor.jsx	Modified toast messages to include file names and replaced keydown event listener with custom event listener for saving.