Created inline user picker

lib/helpers/search_helper.dart

@@ -0,0 +1,31 @@
+import 'package:comunic/helpers/users_helper.dart';
+import 'package:comunic/lists/users_list.dart';
+import 'package:comunic/models/api_request.dart';
+import 'package:comunic/utils/list_utils.dart';
+
+/// Search helper
+///
+/// @author Pierre HUBERT
+
+class SearchHelper {
+
+  /// Search for user. This method returns information about the target users
+  ///
+  /// Returns information about the target users or null if an error occurred
+  Future<UsersList> searchUser(String query) async {
+    // Execute the query on the server
+    final response = await APIRequest(
+        uri: "user/search",
+        needLogin: true,
+        args: {
+          "query": query
+        }
+    ).exec();
+
+    if (response.code != 200) return null;
+
+    return await UsersHelper().getUsersInfo(
+        listToIntList(response.getArray()));
+  }
+
+}