Add native `sendKeyboardEnter()` action

[zoskar]

Use case

Some mobile apps rely on the user tapping the “Confirm” / “Enter” / “Search” button on the virtual keyboard to submit a form or trigger an action (e.g., login or search). Currently, Patrol only supports enterText(), which inputs text but does not trigger the keyboard’s action button. This limitation prevents testing flows where no dedicated “Log In” or “Search” button is present on the screen.

Example: Google search on mobile chrome browser has no button to trigger search

Proposal

Add native sendKeyboardEnter() function