fix(tui): add isHome, isEnd, isDelete helpers for Kitty protocol

Extended the Kitty protocol parser to handle functional keys with
~ terminator (Delete, Insert, PageUp, PageDown) and Home/End keys.
Updated editor.ts and input.ts to use the new helpers.

packages/tui/src/index.ts

@@ -41,8 +41,11 @@ export {
 	isCtrlT,
 	isCtrlU,
 	isCtrlW,
+	isDelete,
+	isEnd,
 	isEnter,
 	isEscape,
+	isHome,
 	isShiftEnter,
 	isShiftTab,
 	isTab,