Add FlareSolverr as an option for bypassing Cloudflare

[Hixelite]

Describe your suggested feature

FlareSolverr starts a proxy server, and it waits for user requests in an idle state using few resources. When some request arrives, it uses Selenium with the undetected-chromedriver to create a web browser (Chrome). It opens the URL with user parameters and waits until the Cloudflare challenge is solved (or timeout). The HTML code and the cookies are sent back to the user, and those cookies can be used to bypass Cloudflare using other HTTP clients.

Other details

I've have tried the troubleshoot page to bypass cloudflare with user agents and nothing works. I found flaresolverr and thought it should be a great addition to use on Aniyomi since most of the websites that these extensions have use Cloudflare or DDosGuard.

Acknowledgements

• I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open or closed issue.
• I have written a short but informative title.
• If this is a request regarding an extension, I should be opening an issue in the extension's repository.
• I have updated the app to version 0.16.4.3.
• I will fill out all of the requested information in this form.