initial framework for additional screens

internal/ui/utils/keys.go

@@ -81,6 +81,21 @@ var (
 		KeyLabel: "F2",
 		KeyDesc:  "display assets screen",
 	}
+	ShelvesScreenKey = uiKeyInfo{
+		Key:      tcell.KeyF3,
+		KeyLabel: "F3",
+		KeyDesc:  "display shelves screen",
+	}
+	CategoriesScreenKey = uiKeyInfo{
+		Key:      tcell.KeyF4,
+		KeyLabel: "F4",
+		KeyDesc:  "display categories screen",
+	}
+	BuildingsScreenKey = uiKeyInfo{
+		Key:      tcell.KeyF5,
+		KeyLabel: "F5",
+		KeyDesc:  "display buildings screen",
+	}
 )
 
 var UIKeyBindings = []uiKeyInfo{
@@ -98,6 +113,9 @@ var UIKeyBindings = []uiKeyInfo{
 	AppExitKey,
 	HelpScreenKey,
 	AssetsScreenKey,
+	ShelvesScreenKey,
+	CategoriesScreenKey,
+	BuildingsScreenKey,
 }
 
 type uiKeyInfo struct {