Add Trovo as a third party provider

Author: artandor

docs/providers/thirdparty.md

@@ -115,6 +115,7 @@ Gateway | Composer Package | Maintainer
 [Thingiverse](https://packagist.org/packages/freshworkx/oauth2-thingiverse) | freshworkx/oauth2-thingiverse | [Jens Neumann](https://github.com/freshworkx)
 [ThirtySevenSignals](https://github.com/nilesuan/oauth2-thirtysevensignals) | nilesuan/oauth2-thirtysevensignals | [Nile Suan](https://github.com/nilesuan)
 [Trakt.tv](https://github.com/Bogstag/oauth2-trakt) | bogstag/oauth2-trakt | [Krister Bogstag](https://github.com/Bogstag/)
+[Trovo](https://github.com/artandor/oauth2-trovo) | artandor/oauth2-trovo | [Nicolas Mylle](https://github.com/artandor/)
 [Twinfield](https://github.com/php-twinfield/twinfield) | php-twinfield/twinfield | [Mollie B.V.](https://github.com/mollie)
 [Twitch.tv](https://github.com/tpavlek/oauth2-twitch) | depotwarehouse/oauth2-twitch | [Troy Pavlek](https://github.com/tpavlek)
 [Twitch.tv (New API Helix)](https://github.com/vertisan/oauth2-twitch-helix) | vertisan/oauth2-twitch-helix | [Paweł Farys](https://github.com/vertisan)