Add a shared PostOptionsMenu component, used by the feed/thread post card and
the profile post card, with a pure post-options service for the block explorer
link and the open/close/focus state. Its first item links to the post
transaction on bch.loping.net in a new tab; the menu opens on the button and
closes on the button again, an outside click, or Escape, with ArrowDown moving
focus to the first item.
By coder.
