"Create poll" UI (#1143)

NB: This is missing analytics, which will be added once https://github.com/matrix-org/matrix-analytics-events/pull/85 is merged.

Closes https://github.com/vector-im/element-meta/issues/2011

tools/localazy/config.json

@@ -120,6 +120,12 @@
         "screen_welcome_.*",
         "screen_migration_.*"
       ]
+    },
+    {
+      "name": ":features:poll:impl",
+      "includeRegex": [
+        "screen_create_poll_.*"
+      ]
     }
   ]
 }