Multilang: add Japanese to UI (#25339)

* Add Japanese to UI

* Add Enlish and Japanese badges

selfdrive/ui/translations/README.md

@@ -1,8 +1,10 @@
 # Multilanguage
 
+[![language](https://raw.githubusercontent.com/commaai/openpilot/badges/translation_badge_main_en.svg)](https://github.com/commaai/openpilot/blob/master/selfdrive/ui/translations/main_en.ts)
 [![language](https://raw.githubusercontent.com/commaai/openpilot/badges/translation_badge_main_zh-CHT.svg)](https://github.com/commaai/openpilot/blob/master/selfdrive/ui/translations/main_zh-CHT.ts)
 [![language](https://raw.githubusercontent.com/commaai/openpilot/badges/translation_badge_main_zh-CHS.svg)](https://github.com/commaai/openpilot/blob/master/selfdrive/ui/translations/main_zh-CHS.ts)
 [![language](https://raw.githubusercontent.com/commaai/openpilot/badges/translation_badge_main_ko.svg)](https://github.com/commaai/openpilot/blob/master/selfdrive/ui/translations/main_ko.ts)
+[![language](https://raw.githubusercontent.com/commaai/openpilot/badges/translation_badge_main_ja.svg)](https://github.com/commaai/openpilot/blob/master/selfdrive/ui/translations/main_ja.ts)
 
 ## Contributing
 

selfdrive/ui/translations/languages.json

@@ -2,5 +2,6 @@
   "English": "main_en",
   "中文（繁體）": "main_zh-CHT",
   "中文（简体）": "main_zh-CHS",
-  "한국어": "main_ko"
+  "한국어": "main_ko",
+  "日本語": "main_ja"
 }

selfdrive/ui/translations/main_ja.ts

@@ -45,7 +45,7 @@
     <message>
         <location filename="../qt/offroad/networking.cc" line="136"/>
         <source>Enter new tethering password</source>
-        <translation>新しいﾃｻﾞﾘﾝｸﾞﾊﾟｽﾜｰﾄﾞを入力してください</translation>
+        <translation>新しいテザリングパスワードを入力</translation>
     </message>
     <message>
         <location filename="../qt/offroad/networking.cc" line="144"/>
@@ -310,7 +310,7 @@
         <location filename="../qt/widgets/input.cc" line="168"/>
         <source>Need at least %n character(s)!</source>
         <translation>
-            <numerusform>ﾊﾟｽﾜｰﾄﾞは％%n文字以上で入力してください！</numerusform>
+            <numerusform>%n文字以上でお願いします！</numerusform>
         </translation>
     </message>
 </context>