Disable proxy for torrent application

[def324]

Describe the bug When configuring a proxy server it will be used for connections to the torrent progam, specifically qBittorrent in my case. Since the proxy is public facing and qBittorrent is internal, it will break the connection.

To Reproduce Steps to reproduce the behavior:

1. Go to 'Configuration -> General -> Advanced Settings -> Proxy Host' and configure an external proxy, such as torproxy.
2. Go to 'Configuration -> Search Settings -> Torrent Search' and configure and internal qBittorrent client.
3. Try to download an episode, you'll see the following error:

Expected behavior Medusa bypasses the external proxy for internal torrent applications. Ideally this could be configured.

Screenshots See above.

Medusa (please complete the following information):

• OS: Docker (linuxserver/medusa) / Linux-4.14.24-qnap-x86_64-with
• Branch: master
• Version: 0.4.3
• Python version: 3.8.5
• Database version: 44.16

Debug logs (at least 50 lines): See screenshot above.

[p0psicles]

I'll make separate proxy settings for providers, indexers, clients and general

[p0psicles]

implemented