copy/duplicate statuspages

📑 I have found these related issues/pull requests i haven't found anything related. 🔖 Feature description provide a way to duplicate an existing status page. use cases • provide different views on the same monitors (e.g. admins might be interested in the *Show certificate expiry*, but the lay audience which just wants to check whether services are running are probably confused by such information) • split an existing status page into multiple sub-status pages by duplicating it and then removing removing the monitors you are not interested in ✔️ Solution on provide a <kbd>Duplicate</kbd> button besides the <kbd>Delete</kbd> button. clicking on the button should create an exact copy of the given status-page (where the user has to fill in the slug) ❓ Alternatives Alternatively, a status page (e.g. adminview) could include another status page (e.g. default). Any settings in the *parent* status (adminview) would override settings in the *s…