Temporary pop-up Slice 1: Add the “Display Temporary Information” brick

[twschiller]

[This issue was auto-generated using ProductBoard.]

#4464

You hit an API and then want to show the results of it, and it comes up only after the results come up (doesn't show up with blank sidebar).

Enables use cases where people want to build on hover over a term, hit an API, then shows additional context.

Draft specification: https://www.notion.so/pixiebrix/Ephemeral-Temporary-Document-Renderer-acd663a90fb64444ae372404ea6bda8a

This issue is for Slice 1 only.

• Slice 1: add the “Display Temporary Information” brick

  • Add a new transformer brick “Display Temporary Information” that takes a:

    • Renderer pipeline argument. @pixiebrix/display

    • A title (string)

  • Add sidebarSlice temporaryPanels state to SidebarState

  • In sidebarController add a showRenderer method that’s called by the method

  • In the SidebarApp protocol, add a onShowRenderer method and wire up to redux in getConnectedListener

  • If a tab in the SidebarApp is for a temporaryPanel, add a close handle to the tab

• Week 42: 5 points

• Week 43: 2 points remain

[twschiller]

Link to subfeature: https://pixiebrix.productboard.com/feature-board/planning/features/15729074

[corinnemayans]

Please post Loom to #sprint-demo when complete.