keys: Add SHOW_POLL_VOTES hotkey.

SHOW_POLL_VOTES : 'v' to check votes for a given poll.

Author: rsashank

docs/hotkeys.md

@@ -136,4 +136,5 @@
 |View current message in browser|<kbd>v</kbd>|
 |Show/hide full rendered message|<kbd>f</kbd>|
 |Show/hide full raw message|<kbd>r</kbd>|
+|Show/hide poll voter list|<kbd>w</kbd>|
 

zulipterminal/config/keys.py

@@ -457,6 +457,11 @@ class KeyBinding(TypedDict):
         'help_text': 'Show/hide full raw message',
         'key_category': 'msg_info',
     },
+    'SHOW_POLL_VOTES': {
+        'keys': ['w'],
+        'help_text': 'Show/hide poll voter list',
+        'key_category': 'msg_info',
+    },
     'NEW_HINT': {
         'keys': ['tab'],
         'help_text': 'New footer hotkey hint',