Normalize app UI pane packages

internal/appui/list/layout/sections.go

@@ -0,0 +1,12 @@
+package layout
+
+type TopSection string
+
+const (
+	TopSearch     TopSection = "search"
+	TopNavigation TopSection = "navigation"
+	TopPath       TopSection = "path"
+	TopGroup      TopSection = "group"
+	TopGroupTools TopSection = "group_tools"
+	TopPrimary    TopSection = "primary"
+)

internal/appui/list/model.go

@@ -0,0 +1,8 @@
+package list
+
+type EntriesSectionState struct {
+	Path            []string
+	SearchQuery     string
+	SelectedEntryID string
+	Editing         bool
+}