feat(frontend): add responsable dashboard screen

eme-frontend/lib/services/api_client.dart

@@ -18,13 +18,20 @@ class ApiClient {
 
   static const String _baseUrl = "http://localhost:3000/api";
   static const String _utilisateurEmail = "lucas.martin@ensitech.eu";
+  static const String responsableEmail = "karim.benali@ensup.eu";
 
-  static Future<dynamic> get(String chemin) async {
+  static Future<dynamic> get(
+    String chemin, {
+    String utilisateurEmail = _utilisateurEmail,
+  }) async {
     final uri = Uri.parse("$_baseUrl$chemin");
 
     late final http.Response reponse;
     try {
-      reponse = await http.get(uri, headers: const {"x-user-email": _utilisateurEmail});
+      reponse = await http.get(
+        uri,
+        headers: {"x-user-email": utilisateurEmail},
+      );
     } catch (_) {
       throw const ApiException(
         "Impossible de joindre le serveur. Vérifiez que le backend est démarré.",
@@ -37,16 +44,49 @@ class ApiClient {
     throw ApiException(_messageErreur(reponse));
   }
 
-  static Future<dynamic> post(String chemin, Map<String, dynamic> body) async {
+  static Future<dynamic> post(
+    String chemin,
+    Map<String, dynamic> body, {
+    String utilisateurEmail = _utilisateurEmail,
+  }) async {
     final uri = Uri.parse("$_baseUrl$chemin");
 
     late final http.Response reponse;
     try {
       reponse = await http.post(
         uri,
-        headers: const {
+        headers: {
           "content-type": "application/json",
-          "x-user-email": _utilisateurEmail,
+          "x-user-email": utilisateurEmail,
+        },
+        body: jsonEncode(body),
+      );
+    } catch (_) {
+      throw const ApiException(
+        "Impossible de joindre le serveur. Vérifiez que le backend est démarré.",
+      );
+    }
+
+    if (reponse.statusCode >= 200 && reponse.statusCode < 300) {
+      return jsonDecode(reponse.body);
+    }
+    throw ApiException(_messageErreur(reponse));
+  }
+
+  static Future<dynamic> patch(
+    String chemin,
+    Map<String, dynamic> body, {
+    String utilisateurEmail = _utilisateurEmail,
+  }) async {
+    final uri = Uri.parse("$_baseUrl$chemin");
+
+    late final http.Response reponse;
+    try {
+      reponse = await http.patch(
+        uri,
+        headers: {
+          "content-type": "application/json",
+          "x-user-email": utilisateurEmail,
         },
         body: jsonEncode(body),
       );