feat(editor): a less crowded track editor and one choice of what the switch tool places

- the switch tool asks what to place: a switch, a slip switch, a crossing or a connection of tracks (crossover, double,
  scissors, ladder), with the templates and the options of that kind only and one line of how to place it with the mouse;
  the bar of hints says the same, the wheel keys of a connection included; panel in its own editormodeswitchtool.cpp
- templates are listed by their names, the lengths a and b and the rest of the label in the tooltip
- the panel of a selected switch shows its length, its type and its drive; the name, number, rail, kilometre and angle are
  under Details
- one toolbar: the tools are no longer drawn a second time down the edge of the view; the track tools show select, lay,
  plan, switch and parallel, the others behind More, which starts closed again (setting track_tools_all)
- the infrastructure tool has no button nor key
- the gizmo options start closed, the node bank isn't drawn in the track mode
- no drive models: said in plain words
- self-test switchkind

application/editoruilayer.cpp

@@ -762,7 +762,7 @@ void editor_ui::render_tool_options()
 		}
 		else
 			render_mode_options(current);
-		if (ImGui::CollapsingHeader(STR_C("Gizmo"), ImGuiTreeNodeFlags_DefaultOpen))
+		if (ImGui::CollapsingHeader(STR_C("Gizmo")))
 		{
 			if (m_gizmooptions)
 				m_gizmooptions();