#4728[Feature]: Support swipe.down on extra-keys for Ctrl+C

Feature description

When defining extra-keys, only popup (swipe up) is supported. Attempting:

{
  "key": "CTRL",
  "swipe": {
    "down": { "key": "CTRL+C" }
  }
}

Probable Solution

Add a swipe.down handler that accepts either key or macro, analogous to popup.

Environment details

• Termux version: 0.119.3 beta
• Android version: e.g. Android 15.0
• Device: e.g. Realme P1 5G

Use cases and benefits

• One-handed interrupt (Ctrl+C) without reaching across the keyboard
• Consistency with swipe-up popups

Additional information

No I dont think so and I only use termux so I can't say for other apps.