Added French language support (#9173)

### What problem does this PR solve?
Implemented French UI translation

### Type of change
- [x] New Feature (non-breaking change which adds functionality)

---------

Co-authored-by: ramin cedric <>
Co-authored-by: Liu An <asiro@qq.com>

web/src/pages/agent/options.ts

@@ -57,6 +57,10 @@ export const LanguageOptions = [
     value: 'de',
     label: 'Deutsch',
   },
+  {
+    value: 'fr',
+    label: 'Français',
+  },
   {
     value: 'et',
     label: 'Eesti',

web/src/pages/flow/constant.tsx

@@ -835,6 +835,10 @@ export const LanguageOptions = [
     value: 'de',
     label: 'Deutsch',
   },
+  {
+    value: 'fr',
+    label: 'Français',
+  },
   {
     value: 'et',
     label: 'Eesti',