ci(Github): add workflow to update ojsOrkgWidget
Closes #1425
What the workflow does on any change:
- Checks for any changes in "public/widget.js" (on the master branch).
- Clone the ORKG OJS plugin.
- Copy the new version of "widget.js".
- Commit and push the changes to the ORKG OJS plugin repository.
Edited by Kheir Eddine