SFMC Data Loader: спампаваць старыя версіі

## Features
• Add an opt-in **Skip empty lines (CSV/TSV)** import option. It skips unquoted blank or whitespace-only records without changing quoted values, JSON imports, API copies, or exports.

## Bugfixes
• Show streaming upload progress without inventing a batch total or percentage.

## Dependencies
• Update `sfmc-dataloader` to `^3.1.0` and refresh compatible security fixes.
• Development now requires Node.js `^22.22.2 || >=24.15.0`; desktop users do not need a separate Node.js installation.

## Installation notes
• Native installers are attached as the release workflow completes. macOS builds remain unsigned; right-click and choose **Open** on first launch if Gatekeeper blocks the app.

**Full Changelog**：https://github.com/JoernBerkefeld/sfmc-dataloader-app/compare/v0.5.0...v0.6.0