Add input hints to interactions in the node graph

[Sidharth-Singh10]

Closes #1820

[Keavon]

Your approach only makes it show the hints momentarily, once, when the graph is opened. It needs to take control during that mode (and allow for supporting additional in-progress interactions).

[Sidharth-Singh10]

@Keavon I moved update_node_graph_hints from DocumentMessageHandler to NodeGraphMessageHandler and implemented showing different hints based on current actions (dragging, wire connection, node selection)

[Keavon]

!build

[github-actions]

📦 Build Complete for a97e406
https://7ca4b2a1.graphite.pages.dev

[0HyperCube]

@Sidharth-Singh10 Thanks for your work so far. However when I pan the node graph (drag with the middle mouse button), the hints for the tool are shown again.

tool_hints_on_pan.mp4

To fix, you will need to modify the tool_message_handler.rs file, specifically references to ToolMessage::UpdateHints.

[Sidharth-Singh10]

@0HyperCube
The bug is fixed now

[Keavon]

Please leave a comment in the issue.