Verify module bookmarkability

[chlebowa]

Companion to https://github.com/insightsengineering/teal/pull/1011

Check every module for the ability to restore input states in bookmarked application.

teal:::bookmarks_identical may be helpful.

Every module constructor function must add teal_bookmarkable attribute to the resulting module. Set the attribute to NULL if module was not verified. Set to TRUE if all inputs are restored from bookmark. Set to FALSE if some inputs fail to restore.

Mention the bookmarkability in the module documentation.

#' @section Bookmarking:
#' This module can be bookmarked (verified).

Do this for all module repos:

• [x] teal.modules.general
• [ ] teal.modules.clinical
• [ ] teal.modules.helios
• [ ] teal.modules.hermes
• [ ] teal.goshawk
• [x] teal.ospery

Work on branch 898_save_app_state3@main.

[kumamiao]

This bookmarking behavior may be changed due to teal.transformupdates