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.

backend/database/migrations/2024_01_01_000005_create_saisie_trackers_table.php

@@ -12,7 +12,7 @@ return new class extends Migration
             $table->id();
             $table->foreignId('tracker_id')->constrained('trackers')->onDelete('cascade');
             $table->foreignId('emotion_id')->constrained('emotions');
-            $table->tinyInteger('intensite');
+            $table->unsignedTinyInteger('intensite');
             $table->text('note')->nullable();
             $table->dateTime('date_saisie');
             $table->timestamps();

backend/database/migrations/2024_01_01_000006_create_feeds_table.php

@@ -15,7 +15,7 @@ return new class extends Migration
             $table->longText('contenu');
             $table->string('image_url')->nullable();
             $table->boolean('est_publie')->default(false);
-            $table->foreignId('auteur_id')->constrained('utilisateurs');
+            $table->foreignId('auteur_id')->constrained('utilisateurs')->onDelete('cascade');
             $table->integer('ordre')->default(0);
             $table->timestamps();
         });