Stop untrusting sources (or new-added repositories specially)

[lalalasupa0]

Describe your suggested feature

When I update a source, it gets marked as untrusted, it's annoying to have to mark them as trusted every time. And, when you start a fresh start in the app, ALL of them are set as untrusted, as someone who has a LOT of sources, you can imagine...

Other details

This is already implemented in Mihon (on advanced settings)

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 1.8.1.2.
• [X] I have checked through the app settings for my feature.
• [ ] I have admitted that I am a clown by having checked this box, as I have not read these acknowledgements.
• [X] I will fill out all of the requested information in this form.

[null2264]

It is in the backlog, just converted it to an issue on GH-72 for better tracking.