Add lazy highlight when reading 'query-replace' arguments

Add lazy highlight when reading 'query-replace' arguments

* lisp/replace.el (query-replace-read-args):  Use
'minibuffer-lazy-highlight-setup' to highlight the text to be replaced
in the original buffer (and a match count, if applicable).
(replace--region-filter): New function for code that
used to be inlined in perform-replace but is useful elsewhere.
(perform-replace): Use 'replace--region-filter'.