Add trackInfo property to some MediaError

[peaBerberian]

This PR adds a trackInfo property to MediaError errors when its code property is set to either:

  - "NO_PLAYABLE_REPRESENTATION" (unplayable track based on DRM policy non-compliance),

  - "MANIFEST_INCOMPATIBLE_CODECS_ERROR" (track with unsupported codec),

  - "BUFFER_APPEND_ERROR" (error while pushing a segment)

  - "BUFFER_FULL_ERROR" (error while pushing a segment which seems specifically linked to that buffer not having enough memory space left)

 That trackInfo property provides characteristics about the track linked to the error. For example, the video track's characteristics when a BUFFER_APPEND_ERROR is linked to a video segment.

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The idea here mainly is to allow applications to develop much more powerful error management logic:

• allowing logs of better errors. For example by knowing if an error was linked to a video or audio track and which one.

• letting the application add resilience in the context of rare issues it empirically observed, that are most of the time linked to both device issues and the contents being played.

  For example, if an application observes that a device's low level bug lead to the impossibility to play for some contents a video track under the PlayReady SL3000 key system, but that playing another video track do work, the application may want to reload the content after the error was received, this time filtering the problematic video track (if this example looks VERY specific, it's because it's one of the situation we did actually encounter! Issues encountered are multiple and for the most part only linked to some device, contents and DRM policies combinations).

  We also thought about handling all those cases on the RxPlayer-side, but some of those appear to be very specific to the contents being played. We thus decided to also let the application develop its own code if it wants to, allowing much more flexibility and reactivity.