Auro-3D: Detect in 24-bit PCM

[almirus]

Hello! This is the first version of support for displaying the Auro-3D format with channel layout. It was implemented by me based on reverse engineering; my detector is available here: https://github.com/almirus/Orua-D3

Auro is embedded in the PCM stream, so it can be contained in FLAC and DTS HD MA, and those must be decoded first.

The documentation is here, and the test files are here.

[JeromeMartinez]

Great to have that.
We could use the FFmpeg plugin for decoding, in the future.
We can manage project files.

I'll force-push an update with the updated project files.

[almirus]

Currently (this PR), only WAV files and MKV files containing WAV are supported.

[JeromeMartinez]

Currently (this PR), only WAV files and MKV files containing WAV are supported.

I understand, the compressed streams will require a decoder, a totally other story, for later.

[almirus]

A silly solution — using a user ffmpeg application (if available).

[JeromeMartinez]

using a user ffmpeg application (if available).

It is the idea with "We could use the FFmpeg plugin for decoding" (we have already it for some other things).

[cjee21]

Related issue: #1471