Improved NSFW Functionality

[DemonKingOdio]

Describe your suggested feature

Currently, the NSFW filter understands Content Rating: Erotica, and Sources marked NSFW, but this functionality could be improved by allowing simple SFW/NSFW tags to be added in the library entry, overwriting the default value. Additionally, a NSFW Badge would be useful for library views

Other details

It may also be useful to add an option to set what triggers an entry to be marked NSFW (i.e. what tags count, and if 18+ sources should be automatically selected)

Acknowledgements

• [X] I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open issue.
• [X] I have written a short but informative title.
• [X] If this is an request for a feature in the original Tachiyomi, I am opening because multiple versions of Yōkai have been released without this feature.
• [X] If this is an issue with an extension, or a request for an extension, I should be contacting the extensions repository's maintainer/support for help.
• [X] I have updated the app to version 1.8.5.5.
• [X] I have checked through the app settings for my feature.
• [X] I will fill out all of the requested information in this form.

[Smol-Ame]

See the following picture for the tags that are counted as NSFW, just like SY. You can already edit manga entries & add/edit tags to said entry, just add one of the NSFW tags & it'll filter it out.