Remove explicit default destructors (#157)

From CppCoreGuidelines:

Rule of Zero: C.20: If you can avoid defining default operations, do.
C.52: Use inheriting constructors to import constructors into a derived class that does not need further explicit initialization.
DRY forward and using declarations.
Miscellaneous:

Fix format.sh to output examples with normalised paths in sorted order.

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

src/ftxui/component/catch_event.cpp

@@ -13,7 +13,6 @@ class CatchEventBase : public ComponentBase {
   // Constructor.
   CatchEventBase(std::function<bool(Event)> on_event)
       : on_event_(std::move(on_event)) {}
-  ~CatchEventBase() override = default;
 
   // Component implementation.
   bool OnEvent(Event event) override {