Full French UI Localization (#29260)

* Update languages.json

French added

* Create main_fr.ts

French lang file

* git ignore

* update french lang
old-commit-hash: 518ced49ce

.gitignore

@@ -84,3 +84,4 @@ build/
 !**/.gitkeep
 
 poetry.toml
+Pipfile

selfdrive/ui/translations/languages.json

@@ -1,6 +1,7 @@
 {
   "English": "main_en",
   "Deutsch": "main_de",
+  "Français": "main_fr",
   "Português": "main_pt-BR",
   "中文（繁體）": "main_zh-CHT",
   "中文（简体）": "main_zh-CHS",