Feature: #83814 - Add system notes creation button to modules button bar

See forge#83814


System notes can be used to add internal information about a page in the backend. The corresponding notes are being displayed in several modules, depending on the records configuration, above or below the module content. Previously, one had to always switch to the list module and usually also to the "new record" wizard to create such notes. To improve the usability, a new button is added to the button bar in the top right of page, list and info module. This allows to directly create a new sys_note record for the current page.

The new button can be disabled via page TSconfig:

mod.SHARED.disableSysNoteButton = 1


It's now possible to create system notes directly in the corresponding modules using the button in the modules top right button bar.