FullscreenUI: Use icon font for bindings

src/util/input_manager.h

@@ -207,6 +207,9 @@ std::optional<u32> ConvertHostKeyboardStringToCode(const std::string_view& str);
 /// Converts a key code from an identifier to a human-readable string.
 std::optional<std::string> ConvertHostKeyboardCodeToString(u32 code);
 
+/// Converts a key code from an identifier to an icon which can be drawn.
+const char* ConvertHostKeyboardCodeToIcon(u32 code);
+
 /// Creates a key for a host-specific key code.
 InputBindingKey MakeHostKeyboardKey(u32 key_code);
 
@@ -230,6 +233,9 @@ std::string ConvertInputBindingKeyToString(InputBindingInfo::Type binding_type,
 std::string ConvertInputBindingKeysToString(InputBindingInfo::Type binding_type, const InputBindingKey* keys,
                                             size_t num_keys);
 
+/// Represents a binding with icon fonts, if available.
+bool PrettifyInputBinding(std::string& binding);
+
 /// Returns a list of all hotkeys.
 std::vector<const HotkeyInfo*> GetHotkeyList();