Enhance chapter search

[lalalasupa0]

Describe your suggested feature

When searching for chapters, it would be cool to be able to exclude chapters with certain words in their titles at the same time, this would work like this:

extras -bonus

Here, chapters with the word "bonus" would be excluded from the search

Other details

Here are other improprieties that might be worth mentioning: https://nyaa.si/help#using-search

This would also open up for more actions related to #344

In Mihon there is no chapters search by titles, so I issued this here

Acknowledgements

• I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open issue.
• I have written a short but informative title.
• 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.
• 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.
• I have updated the app to version 1.9.7.
• I have checked through the app settings for my feature.
• I will fill out all of the requested information in this form.