Add Russian translation and update release notes

LANG.md

@@ -1,3 +1,4 @@
+cs
 de
 en
 fr
@@ -5,6 +6,6 @@ hr
 it
 pl
 pt-br
-cs
+ru
 zh_Hans
 zh_Hant

README.md

@@ -87,6 +87,7 @@ Are you using this addon in your Thunderbird?
 - German (de): Generated automatically <img src="https://micz.it/weblate/thunderai/de.svg">
 - Italian (it): [Mic](https://github.com/micz/) <img src="https://micz.it/weblate/thunderai/it.svg">
 - Polski (pl): [neexpl](https://github.com/neexpl), [makkacprzak](https://github.com/makkacprzak) <img src="https://micz.it/weblate/thunderai/pl.svg">
+- Russian (ru): [Maksim](https://hosted.weblate.org/user/law820314/)
 - Português Brasileiro (pt-br): Bruno Pereira de Souza <img src="https://micz.it/weblate/thunderai/pt-br.svg">
 <br>
 

options/mzta-release-notes.html

@@ -21,6 +21,7 @@
         <li><i>[OpenAI Comp API]</i> Added Perplexity configuration [<a href="https://github.com/micz/ThunderAI/issues/405">#405</a>].</li>
         <li><i>[OpenAI Comp API]</i> Added OpenRouter configuration [<a href="https://github.com/micz/ThunderAI/issues/401">#401</a>].</li>
         <li>Traditional Chinese (zh_Hant) translation added, thanks to <a href="https://github.com/evez">evez</a>.</li>
+        <li>Russian (ru) translation added, thanks to <a href="https://hosted.weblate.org/user/law820314/">Maksim</a>.</li>
         <li>Some English typing errors have been fixed [<a href="https://github.com/micz/ThunderAI/issues/422">#422</a>].</li>
         <li>...</li>
       </ul>