refactor the way we render lists

pkg/gui/presentation/stash_entries.go

@@ -0,0 +1,20 @@
+package presentation
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/commands"
+)
+
+func GetStashEntryListDisplayStrings(stashEntries []*commands.StashEntry) [][]string {
+	lines := make([][]string, len(stashEntries))
+
+	for i := range stashEntries {
+		lines[i] = getStashEntryDisplayStrings(stashEntries[i])
+	}
+
+	return lines
+}
+
+// getStashEntryDisplayStrings returns the display string of branch
+func getStashEntryDisplayStrings(s *commands.StashEntry) []string {
+	return []string{s.DisplayString}
+}