In an online development moodle create a course with whatever resources desired. On that instance turn on LTI tool (provider). On other instances of Moodle, use the LTI tool ... provide the LTI info from the LTI provider course .... then one has one link in 'other Moodle' that gets *all* the content in the LTI provider dev moodle.
Am sure you'd have to tinker with it .... IF the LTI provider server/course is nothing but resources ... links to PDF files, DocX's and other (would think twice about doing video's with that ... Moodle has never made a good video streaming server).
Something like that might provide what you seek.
'spirit of sharing', Ken