feat(driver): add Driver.long_press on WDA and Android

driver/base.py

@@ -27,6 +27,13 @@ class Driver(ABC):
     def tap(self, x: float, y: float) -> None:
         """Tap the screen at the given coordinates."""
 
+    @abstractmethod
+    def long_press(self, x: float, y: float, duration_ms: int = 1200) -> None:
+        """Press and hold at the given coordinates for ``duration_ms``.
+
+        Some platforms ignore ``duration_ms`` (fixed system hold duration).
+        """
+
     @abstractmethod
     def swipe(
         self,