[feat][experimental] Add auto-translate input message functionality and language support in chat panel and settings

This commit adds new entries in the language files and UI support for auto-translate messages.

The new feature uses a textarea input field to translate messages as they are typed, and the translated text is shown in a new field. Also, the language settings now provide an option to enable/disable auto message translation.

The code changes include adding a new function to update the input sizes for both input fields and some minor code refactoring to support new functionality.

src/lang/ko.ts

@@ -279,4 +279,6 @@ export const languageKorean = {
     backgroundHTML: "백그라운드 임베딩",
     copied: "복사됨",
     useChatCopy: "채팅 메시지 복사 사용",
+    autoTranslateInput: "입력 자동 번역",
+    enterMessageForTranslateToEnglish: "영어로 번역할 메시지를 입력해주세요",
 }