Implement removePersonFromList function to delete a person node from the linked list; update documentation in users.h

src/users.c

@@ -159,4 +159,36 @@ int addTimeEvent(
     _person->user.last_time_event = current_time;
 
     return 1;
+}
+
+int removePersonFromList(node_t **_head, node_t **_person)
+{
+    if (_head == NULL || *_head == NULL || _person == NULL || *_person == NULL)
+        return 0;
+
+    node_t *current = *_head;
+    node_t *prev = NULL;
+
+    while (current != NULL)
+    {
+        if (current == *_person)
+        {
+            if (prev == NULL)
+            {
+                *_head = current->next;
+            }
+            else
+            {
+                prev->next = current->next;
+            }
+            free(current->user.name);
+            free(current->user.surname);
+            free(current);
+            *_person = NULL;
+            return 1;
+        }
+        prev = current;
+        current = current->next;
+    }
+    return 0;
 }