Don't confirm with RET even when overwriting in register commands

Don't confirm with RET even when overwriting in register commands

This happen when register-use-preview is nil or never.
This reproduce what we had previously in 29.1 but with filtering in
the preview and default registers are provided for the commands of
type 'set'.

This is implemented with cl-defmethod to keep the code as much as
possible configurable.

* lisp/register.el (register-preview-info): New slot.
(register-command-info): Add new methods for copy-to-register,
point-to-register, number-to-register,
window-configuration-to-register, frameset-to-register and
copy-rectangle-to-register.
(register-read-with-preview): Bind noconfirm.