Make yank-media auto select the best mime type

Make yank-media auto select the best mime type

* lisp/yank-media.el (yank-media-preferred-types): Add new
variable that holds the list of mime types in order of their
preference.
(yank-media-autoselect-function): Add new variable and function
to choose the most preferred media type.
(yank-media): Make 'yank-media' choose the most preferred mime
type by default.
* doc/emacs/killing.texi (Clipboard):
* doc/lispref/frames.texi (Yanking Media): Document the new
behaviour, and the new variables.
* etc/NEWS: Announce the change.  (Bug#75116)

(cherry picked from commit 0ee50a3420fb8df8f3477dac610dcd53c633fff5)