Community Wishlist Survey 2022/Add the ability to use ManageWiki to opt out wikis from certain types of central notices

Proposed by K599

Proposal summary: Give people an option in ManageWiki to opt out wikis from certain types of central notices, being those that are defined from campaign types, instead of only having an "all or nothing" setting.

Full proposal: There are campaign types that are configured with $wgCentralNoticeCampaignTypes in LocalSettings.php. This is what allows for central notices to be assigned a type when being set up. Individual users can then opt-out of certain types by going to their user preferences. This proposal asks to implement a setting in ManageWiki to be able to do a similar action for a whole wiki. Currently, ManageWiki only has a setting for opting out of all central notices.

Additional suggestions related to what is being proposed here can be found in this community noticeboard discussion. One such suggestion is to add some text consisting of instructions to central notices so that people can more easily figure out how to use this opt-out feature.