Feature Request: Bookmarking end-of-file in an org document

I would like to be able to save a bookmark to an org file that points to the end of the file, not to any heading in it. This isn't really org-specific, but I only have use cases that involve org files. Since `org-bookmark-heading` remaps the the `bookmark-make-record-function` in any org-mode buffer, this feature should either be in this package or there should be a fallback-to-default-bookmark handler (and therefore a way to decide whether to fallback, and have the feature in the built-in bookmark function, which adds complexity in both places).

Since this might not be of interest to everyone, there would need to be a switch to toggle this feature.

My proposal is to recognize that point is at end of buffer and record a specific type of org bookmark in that case. Could overload the existing `id` or `outline-path` fields for this or have a different attribute. `org-bookmark-heading-jump` would then recognize the EOB marker and jump directly to `(end-of-buffer)`.

Would this be useful to other people?