feat: add mobile application structure with emotion picker and API integration

- Added favicon and icon assets for the mobile app.
- Implemented EmotionPicker component for selecting emotions with child options.
- Created hooks for fetching emotions, feeds, and rapport data.
- Established API service for handling requests and authentication.
- Integrated Zustand for state management of user authentication.
- Defined color palette for the application.
- Set up TypeScript types for various entities including User, Emotion, and Feed.
- Configured Babel and TypeScript for the mobile project.
- Added package.json with necessary dependencies for Expo and React Native.

frontend/src/app/(auth)/connexion/page.tsx

@@ -23,8 +23,9 @@ export default function ConnexionPage() {
       await login(email, password);
       toast.success('Connexion réussie !');
       router.push('/dashboard');
-    } catch (error: any) {
-      const message = error?.response?.data?.message || 'Identifiants incorrects';
+    } catch (error: unknown) {
+      const axiosError = error as import('axios').AxiosError<{ message?: string }>;
+      const message = axiosError.response?.data?.message || 'Identifiants incorrects';
       toast.error(message);
     } finally {
       setLoading(false);
@@ -83,6 +84,7 @@ export default function ConnexionPage() {
                   type="button"
                   onClick={() => setShowPassword(!showPassword)}
                   className="absolute right-3 top-1/2 -translate-y-1/2 text-gray-400 hover:text-gray-600"
+                  aria-label={showPassword ? 'Masquer le mot de passe' : 'Afficher le mot de passe'}
                 >
                   {showPassword ? <EyeOff className="w-5 h-5" /> : <Eye className="w-5 h-5" />}
                 </button>