[FEAT] Add FlareSolverr

[Poopselon]

Is this a new feature request?

• I have searched the existing issues

Wanted change

Install FlareSolverr package into container.

Reason for change

1337x torrents started using clouflare challenge and jacket can't index.
Error:
An error occurred while testing this indexer
Exception (1337x): Challenge detected but FlareSolverr is not configured: Challenge detected but FlareSolverr is not configured

Proposed code change

Changes documented in jacket documentation. https://github.com/Jackett/Jackett#configuring-flaresolverr

[github-actions]

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[Roxedus]

You can use the flaresolverr container and integrate it like intended.

[Poopselon]

But why not integrate it in same container?

[Roxedus]

It does not belong in the same container. Its not a requirement for jackett to work.

[Poopselon]

Ok, thanks