Convert the non-English translation sets to JSON files

We write a hacky, one-off script to do that. We need this script only once, so
we don't bother polishing it much. We'll re-purpose it later in the branch to
convert the English translation set to JSON; that is an operation that we need
to do regularly in the future.

cmd/i18n/main.go

@@ -0,0 +1,41 @@
+package main
+
+import (
+	"encoding/json"
+	"log"
+	"os"
+
+	"github.com/jesseduffield/lazygit/pkg/i18n"
+)
+
+func saveLanguageFileToJson(tr i18n.TranslationSet, filepath string) error {
+	jsonData, err := json.MarshalIndent(tr, "", "  ")
+	if err != nil {
+		return err
+	}
+
+	jsonData = append(jsonData, '\n')
+	return os.WriteFile(filepath, jsonData, 0o644)
+}
+
+func saveNonEnglishLanguageFilesToJson() error {
+	for lang, tr := range i18n.GetTranslationSets() {
+		if lang == "en" {
+			continue
+		}
+
+		err := saveLanguageFileToJson(tr, "pkg/i18n/translations/"+lang+".json")
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func main() {
+	err := saveNonEnglishLanguageFilesToJson()
+	if err != nil {
+		log.Fatal(err)
+	}
+}