Move the CLI to Stage 4.73.0 and render navigation metadata and toolbars

[einari]

The CLI renders and runs the navigation hierarchy, toolbars, outlets and dialogs a model authors: it bundles Stage 4.73.0, which hosts them through Scene's navigation host, and no longer refuses the navigation metadata Stage could not honor before.

Changed

• Bundles Stage 4.73.0 (Scene 4.21.0, Screenplay 4.137.0) and runs cratis/stage:4.73.0 by default. The release brings module-level and screen-level navigation contributions, a screen's place in the module and feature hierarchy, toolbar items that open their destination, presentation hints (icon, text, both), and the Scene host's outlets, dialogs and deep links. (part of Pass full screen application and package configuration through run and render #284)

Removed

• The CLI-RENDER-015 refusal of navigation contributions that declare id, icon, presentation, group or destination outlet|dialog|external: Stage 4.73.0 honours them, so cratis render now renders them and writes them into the scene. (part of Pass full screen application and package configuration through run and render #284)