feat(import): render the file import in a GeoImport view

The file import no longer looks up or listens on the Import button, the
picker or the list, and no longer restores focus itself. It connects
importGeoFiles, toggleGeoImport, flyToGeoImport and removeGeoImport to
the display store. A new GeoImport view owns the button, the picker, the
rows and the hint: it opens the picker once the import has presented
itself, sends the pick and the row buttons' actions, and hands keyboard
focus on with v-focus-safe-children before a focused row goes, to the
next row's same button, else the previous row's, else Import.

docs/VUE-MIGRATION.md

@@ -133,9 +133,10 @@ a feature supplying only its accent.
    `gev-display` store, which VisualSettings publishes to, and the 3D
    aircraft group, the Draw controls and the imported file list, which
    AircraftDisplay, the draw tool and the file import publish beside it;
-   the controls call DisplayBindings and the draw tool through the store's
-   `connect`/`act`, the newest owner of an action answering it; the
-   file import restores keyboard focus once the list has rendered; the
+   the controls call DisplayBindings, the draw tool and the file import
+   through the store's `connect`/`act`, the newest owner of an action
+   answering it; `GeoImport` hands keyboard focus on before a focused row
+   goes, with `v-focus-safe-children`; the
    style parameter rows render through Vue behind `createStyleParameters()`,
    as a render function so the portable `./ui/input` entry needs no
    component compiler; the other groups follow one owner at a time),