As a Kedro user, I want to preview which nodes are included in my selection for slicing so that I can understand what my slice will be before creating a new slice.

[Huongg]

Acceptance criteria:

• [ ] Chart Highlighting: The two nodes selected with Shift held should be highlighted with a darker blue background, and any nodes in between should be highlighted with a lighter blue background.
• [ ] Nodes List Highlighting: The nodes list on the left-hand side should also highlight all the nodes included in the newly selected pipeline.
• [ ] Call to Action: A button at the bottom should display the number of nodes selected and include a "Slice" button.
• [ ] Slice Button Functionality: Clicking the "Slice" button should navigate to a new view displaying only the selected nodes.
• [ ] Outside Click: Clicking outside the selection will un-select all the nodes, and go back to the default/previous page. This includes clicking on any other nodes outside the sliced pipeline