Multiple fixes: signed/unsigned, etc... (#600)

Co-authored-by: ArthurSonzogni <sonzogniarthur@gmail.com>

src/ftxui/component/menu_test.cpp

@@ -14,6 +14,7 @@
 #include "ftxui/screen/screen.hpp"    // for Screen
 #include "ftxui/util/ref.hpp"         // for Ref
 
+// NOLINTBEGIN
 namespace ftxui {
 
 using namespace std::chrono_literals;
@@ -233,6 +234,7 @@ TEST(MenuTest, AnimationsVertical) {
 }
 
 }  // namespace ftxui
+// NOLINTEND
 
 // Copyright 2022 Arthur Sonzogni. All rights reserved.
 // Use of this source code is governed by the MIT license that can be found in