[py] add macOS specific keys to Key enum (#15948)

* [py] add macOS specific keys to Key enum

* lint

* fmt

* tweaks

* tweaks

* linting

---------

Co-authored-by: Simon Benzer <69980130+shbenzer@users.noreply.github.com>
Co-authored-by: Simon Benzer <simonhbenzer@gmail.com>

Author: Delta456

py/selenium/webdriver/common/keys.py

@@ -31,10 +31,13 @@ class Keys:
     ENTER = "\ue007"
     SHIFT = "\ue008"
     LEFT_SHIFT = SHIFT
+    RIGHT_SHIFT = "\ue050"
     CONTROL = "\ue009"
     LEFT_CONTROL = CONTROL
+    RIGHT_CONTROL = "\ue051"
     ALT = "\ue00a"
     LEFT_ALT = ALT
+    RIGHT_ALT = "\ue052"
     PAUSE = "\ue00b"
     ESCAPE = "\ue00c"
     SPACE = "\ue00d"
@@ -86,5 +89,12 @@ class Keys:
     F12 = "\ue03c"
 
     META = "\ue03d"
+    LEFT_META = META
+    RIGHT_META = "\ue053"
     COMMAND = "\ue03d"
+    LEFT_COMMAND = COMMAND
     ZENKAKU_HANKAKU = "\ue040"
+
+    # Extended macOS keys
+    LEFT_OPTION = LEFT_ALT
+    RIGHT_OPTION = RIGHT_ALT