[Android] Animate audio player controls transition

[Geoffrey Métais]

vlc-android | branch: master | Geoffrey Métais <geoffrey.metais at gmail.com> | Mon Sep 17 18:49:45 2018 +0200| [df01386fbe825161996bacf6814e4a00b12bf4b2] | committer: Geoffrey Métais

Animate audio player controls transition

Fixes #614

> https://code.videolan.org/videolan/vlc-android/commit/df01386fbe825161996bacf6814e4a00b12bf4b2
---

 vlc-android/res/layout-land/audio_player.xml       |  68 +++++-----
 vlc-android/res/layout/audio_player.xml            |  64 +++++-----
 vlc-android/res/layout/audio_player_header.xml     | 142 +++++++++++++++++++++
 .../src/org/videolan/vlc/gui/audio/AudioPlayer.kt  |  53 ++++----
 4 files changed, 242 insertions(+), 85 deletions(-)

Diff:   https://code.videolan.org/videolan/vlc-android/commit/df01386fbe825161996bacf6814e4a00b12bf4b2