Implement chromecast support

[jwbuiter]

Description

Adds a new modal which can be used to cast files with supported file formats to a chromecast.
The modal can be opened from a context menu item on a selected torrent.
Users can select the file to be casted and subtitles.
After starting the cast, the cast can be paused/played and the progress can be viewed.

Chromecasting is only supported on some browsers and only from secure domains.

Supported subtitle formats:

• .vtt
• .srt
• subtitles embedded in .mkv video files

Screenshots

Types of changes

• Breaking change (changes that break backward compatibility of public API or CLI - semver MAJOR)
• New feature (non-breaking change which adds functionality - semver MINOR)
• Bug fix (non-breaking change which fixes an issue - semver PATCH)

[codecov]

Codecov Report

Merging #186 (4e6c952) into master (227c48a) will increase coverage by 0.40%.
The diff coverage is 22.99%.

@@            Coverage Diff             @@
##           master     #186      +/-   ##
==========================================
+ Coverage   78.62%   79.02%   +0.40%     
==========================================
  Files          57       56       -1     
  Lines        9211     9068     -143     
  Branches      910      925      +15     
==========================================
- Hits         7242     7166      -76     
+ Misses       1958     1890      -68     
- Partials       11       12       +1     

Impacted Files	Coverage Δ
server/routes/api/torrents.ts	53.58% <18.30%> (-10.60%)	⬇️
server/routes/api/index.ts	74.07% <37.77%> (+12.30%)	⬆️
server/util/fileUtil.ts	50.54% <0.00%> (-31.27%)	⬇️
server/routes/api/feed-monitor.ts	92.92% <0.00%> (-4.05%)	⬇️
...er/services/rTorrent/util/torrentPropertiesUtil.ts	79.56% <0.00%> (-2.16%)	⬇️
server/util/torrentPropertiesUtil.ts	92.30% <0.00%> (-2.14%)	⬇️
...erver/services/qBittorrent/clientRequestManager.ts	64.42% <0.00%> (-1.52%)	⬇️
server/routes/api/client.ts	95.12% <0.00%> (-1.13%)	⬇️
...erver/services/qBittorrent/clientGatewayService.ts	73.86% <0.00%> (-0.89%)	⬇️
... and 22 more

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[jesec]

CI has to pass. Additionally, use Node 15 and npm 7 to develop, so you can get a proper package-lock.json.

[jesec]

Please pull https://github.com/jesec/flood/tree/pr/186. I cleaned the changes up a bit.

[luzpaz]

Is there an ETA on this PR ?