* Add new IEs
* GlomexBaseIE: Base IE class
* GlomexIE: Extract videos from video.glomex.com (by deferring to
glomex:embed)
* GlomexEmbedIE: Extract Glomex videos by matching the player URL
* Query the API to extract metadata, detect video formats and get the
respective (JWT protected) stream/source URLs
* The API query may return one or more videos: the latter case is
treated as a playlist
* As this is otherwise identically handled, a separate IE was not
deemed necessary
* However title and description fields are not set for playlist
results
* They do not exist in the parent object; obtaining them from the
first entry is not indicative for the playlist content
* As the playlist order is not always stable (this is true at least
for related videos playlists), it makes writing test cases
impossible
* Let GenericIE detect embeds by matching all three integration methods:
* HTML: glomex-player tag or data attributes
* Javascript: naive parsing of inline scripts for string constants
assigned to integration parameters
* Iframe: src attribute GlomexEmbedIE._VALID_URL
* Let GlomexIE and the former embed detection pass the origin URL to
GlomexEmbedIE by smuggling it in the player URL, as this is an
expected parameter in API requests
* Add test cases for both single videos and two playlist flavors
