Add a proper license

[EraYaN]

Alright so I'd like to license this MPL-2.0.

Consent list:

• [x] @EraYaN
• [x] @dmitrylyzo
• [x] @TrueTechy
• [x] @Narfinger
• [x] @JustAMan
• [x] @dkanada

Please respond with an affirmative for the license change in a comment. (Or edit this comment with the tick boxes)

[dkanada]

I'm not a fan of licenses that require headers, but other than that I'm okay with whatever we end up choosing in this pull request.

[JustAMan]

All files that came form play-z will need the following notice:

Do we have those? What exact files are they?

Anyway, I think I'd like dual-license of MPL-2.0 + GPL3 (or AGPL3 for that matter).

[EraYaN]

This one: https://github.com/jellyfin/jellyfin-webos/blob/master/org.jellyfin.webos/js/ajax.js it already has the right header. But we can relicence our changes under the MPL. (not under the GPL I don't think) or just leave it Apache 2.0.

[JustAMan]

Let's go with MPL2 then IMHO

[dkanada]

sounds good

[dmitrylyzo]

:heavy_check_mark: SIGNATURE goes here

[TrueTechy]

Sounds good

[Narfinger]

I approve of this licence change to MPL2.