Ensure bind-key is its own package

Ensure bind-key is its own package

* lisp/finder.el (finder--builtins-alist): Remove "use-package"
directory.
* lisp/use-package/bind-key.el: Declare library as part of the
'bind-key' package.
* lisp/use-package/use-package-bind-key.el:
* lisp/use-package/use-package-core.el:
* lisp/use-package/use-package-delight.el:
* lisp/use-package/use-package-diminish.el:
* lisp/use-package/use-package-ensure-system-package.el:
* lisp/use-package/use-package-ensure.el:
* lisp/use-package/use-package-jump.el:
* lisp/use-package/use-package-lint.el: Declare library as part of the
'use-package' package.  (Bug#62751)

Do not merge to master.