[Feature Request]: FCast support

[Saarsk]

Describe the feature you'd like to request

FCast support, as an alternative to the closed protocol Chromecast. It was created by FUTO, the developer behind GrayJay.

Snippet from fcast.org on why they created it:

We developed FCast to democratize the field of media streaming. By creating an open-source protocol, we aim to encourage innovation and offer developers the freedom to create their own custom receiver implementations. This way, we're not just providing a tool for streaming media content, but also creating a dynamic platform for technological growth and creativity.

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Describe the solution you'd like

FCast links:
Site: https://fcast.org/
Repo: https://gitlab.futo.org/videostreaming/fcast
Mirror repo on Github: https://github.com/futo-org/fcast

Snippet from fcast.org:

FCast has provided example implementations of both clients and receivers in Android, Rust, and TypeScript. You can use these as a reference while building your own application. Additionally, you can consult the protocol documentation for specific details on implementing the FCast protocol. Despite its powerful capabilities, the protocol is designed to be simple and straightforward to implement, making it accessible for developers at all levels.

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Describe alternatives you've considered

No alternatives, really. This is to solve the lack of Chromecast alternatives. Chromecast is not open, stopped working on some devices and has its fair share of issues that cannot be solved because it's not open.