Convert locale files from ini to json format (#35489)

Migrate from the current INI format to JSON for translations. JSON is
widely supported, including by platforms such as Crowdin and Weblate.

routers/web/user/setting/packages.go

@@ -53,7 +53,7 @@ func PackagesRuleEdit(ctx *context.Context) {
 }
 
 func PackagesRuleAddPost(ctx *context.Context) {
-	ctx.Data["Title"] = ctx.Tr("settings")
+	ctx.Data["Title"] = ctx.Tr("settings_title")
 	ctx.Data["PageIsSettingsPackages"] = true
 	ctx.Data["UserDisabledFeatures"] = user_model.DisabledFeaturesWithLoginType(ctx.Doer)