Migrated from internal EXM-43467.
@georgebina presented for one of our partners how settings and frameworks can be saved at project level options, he created a small sample project for it:
https://github.com/oxygenxml/oXygenDITAProject
Attaching a small topic I created for a similar presentation:
customizing_the_dita_editing_experience_using_oxygen_xml_editor.zip