docs: add Polish and Vietnamese README translations

Add README.pl.md and README.vi.md with full translations of the
project documentation, expanding internationalization support for
the OmniRoute AI gateway project.

README.pt-BR.md

@@ -104,7 +104,7 @@ _Conecte qualquer IDE ou ferramenta CLI com IA através do OmniRoute — gateway
 
 [🌐 Website](https://omniroute.online) • [🚀 Início Rápido](#-início-rápido) • [💡 Funcionalidades](#-funcionalidades-principais) • [📖 Docs](#-documentação) • [💰 Preços](#-preços-resumidos)
 
-🌐 **Disponível em:** [English](README.md) | [Português](README.pt-BR.md) | [Español](README.es.md) | [Русский](README.ru.md) | [中文](README.zh-CN.md) | [Deutsch](README.de.md) | [Français](README.fr.md) | [Italiano](README.it.md)
+🌐 **Available in:** 🇺🇸 [English](README.md) | 🇧🇷 [Português (Brasil)](README.pt-BR.md) | 🇪🇸 [Español](README.es.md) | 🇫🇷 [Français](README.fr.md) | 🇮🇹 [Italiano](README.it.md) | 🇷🇺 [Русский](README.ru.md) | 🇨🇳 [中文 (简体)](README.zh-CN.md) | 🇩🇪 [Deutsch](README.de.md) | 🇮🇳 [हिन्दी](README.in.md) | 🇹🇭 [ไทย](README.th.md) | 🇺🇦 [Українська](README.uk-UA.md) | 🇸🇦 [العربية](README.ar.md) | 🇯🇵 [日本語](README.ja.md) | 🇻🇳 [Tiếng Việt](README.vi.md) | 🇧🇬 [Български](README.bg.md) | 🇩🇰 [Dansk](README.da.md) | 🇫🇮 [Suomi](README.fi.md) | 🇮🇱 [עברית](README.he.md) | 🇭🇺 [Magyar](README.hu.md) | 🇮🇩 [Bahasa Indonesia](README.id.md) | 🇰🇷 [한국어](README.ko.md) | 🇲🇾 [Bahasa Melayu](README.ms.md) | 🇳🇱 [Nederlands](README.nl.md) | 🇳🇴 [Norsk](README.no.md) | 🇵🇹 [Português (Portugal)](README.pt.md) | 🇷🇴 [Română](README.ro.md) | 🇵🇱 [Polski](README.pl.md) | 🇸🇰 [Slovenčina](README.sk.md) | 🇸🇪 [Svenska](README.sv.md) | 🇵🇭 [Filipino](README.phi.md)
 
 </div>
 

README.ru.md

@@ -104,7 +104,7 @@ _Подключайте любую IDE или CLI-инструмент с AI ч
 
 [🌐 Сайт](https://omniroute.online) • [🚀 Быстрый старт](#-быстрый-старт) • [💡 Функции](#-основные-функции) • [📖 Документация](#-документация) • [💰 Цены](#-обзор-цен)
 
-🌐 **Доступно на:** [English](README.md) | [Português](README.pt-BR.md) | [Español](README.es.md) | [Русский](README.ru.md) | [中文](README.zh-CN.md) | [Deutsch](README.de.md) | [Français](README.fr.md) | [Italiano](README.it.md)
+🌐 **Available in:** 🇺🇸 [English](README.md) | 🇧🇷 [Português (Brasil)](README.pt-BR.md) | 🇪🇸 [Español](README.es.md) | 🇫🇷 [Français](README.fr.md) | 🇮🇹 [Italiano](README.it.md) | 🇷🇺 [Русский](README.ru.md) | 🇨🇳 [中文 (简体)](README.zh-CN.md) | 🇩🇪 [Deutsch](README.de.md) | 🇮🇳 [हिन्दी](README.in.md) | 🇹🇭 [ไทย](README.th.md) | 🇺🇦 [Українська](README.uk-UA.md) | 🇸🇦 [العربية](README.ar.md) | 🇯🇵 [日本語](README.ja.md) | 🇻🇳 [Tiếng Việt](README.vi.md) | 🇧🇬 [Български](README.bg.md) | 🇩🇰 [Dansk](README.da.md) | 🇫🇮 [Suomi](README.fi.md) | 🇮🇱 [עברית](README.he.md) | 🇭🇺 [Magyar](README.hu.md) | 🇮🇩 [Bahasa Indonesia](README.id.md) | 🇰🇷 [한국어](README.ko.md) | 🇲🇾 [Bahasa Melayu](README.ms.md) | 🇳🇱 [Nederlands](README.nl.md) | 🇳🇴 [Norsk](README.no.md) | 🇵🇹 [Português (Portugal)](README.pt.md) | 🇷🇴 [Română](README.ro.md) | 🇵🇱 [Polski](README.pl.md) | 🇸🇰 [Slovenčina](README.sk.md) | 🇸🇪 [Svenska](README.sv.md) | 🇵🇭 [Filipino](README.phi.md)
 
 </div>
 

README.zh-CN.md

@@ -104,7 +104,7 @@ _通过 OmniRoute 连接任何 AI 驱动的 IDE 或 CLI 工具 — 免费 API
 
 [🌐 网站](https://omniroute.online) • [🚀 快速开始](#-快速开始) • [💡 功能特性](#-核心功能) • [📖 文档](#-文档) • [💰 定价](#-定价概览)
 
-🌐 **多语言版本：** [English](README.md) | [Português](README.pt-BR.md) | [Español](README.es.md) | [Русский](README.ru.md) | [中文](README.zh-CN.md) | [Deutsch](README.de.md) | [Français](README.fr.md) | [Italiano](README.it.md)
+🌐 **Available in:** 🇺🇸 [English](README.md) | 🇧🇷 [Português (Brasil)](README.pt-BR.md) | 🇪🇸 [Español](README.es.md) | 🇫🇷 [Français](README.fr.md) | 🇮🇹 [Italiano](README.it.md) | 🇷🇺 [Русский](README.ru.md) | 🇨🇳 [中文 (简体)](README.zh-CN.md) | 🇩🇪 [Deutsch](README.de.md) | 🇮🇳 [हिन्दी](README.in.md) | 🇹🇭 [ไทย](README.th.md) | 🇺🇦 [Українська](README.uk-UA.md) | 🇸🇦 [العربية](README.ar.md) | 🇯🇵 [日本語](README.ja.md) | 🇻🇳 [Tiếng Việt](README.vi.md) | 🇧🇬 [Български](README.bg.md) | 🇩🇰 [Dansk](README.da.md) | 🇫🇮 [Suomi](README.fi.md) | 🇮🇱 [עברית](README.he.md) | 🇭🇺 [Magyar](README.hu.md) | 🇮🇩 [Bahasa Indonesia](README.id.md) | 🇰🇷 [한국어](README.ko.md) | 🇲🇾 [Bahasa Melayu](README.ms.md) | 🇳🇱 [Nederlands](README.nl.md) | 🇳🇴 [Norsk](README.no.md) | 🇵🇹 [Português (Portugal)](README.pt.md) | 🇷🇴 [Română](README.ro.md) | 🇵🇱 [Polski](README.pl.md) | 🇸🇰 [Slovenčina](README.sk.md) | 🇸🇪 [Svenska](README.sv.md) | 🇵🇭 [Filipino](README.phi.md)
 
 </div>