[Android] Add Android Auto search support

[Robert Stone]

vlc-android | branch: master | Robert Stone <rhstone at gmail.com> | Mon Apr 26 20:56:45 2021 -0700| [21ebae6998fb0f915e59aa9f59e18d885927950c] | committer: Robert Stone

Add Android Auto search support

> https://code.videolan.org/videolan/vlc-android/commit/21ebae6998fb0f915e59aa9f59e18d885927950c
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 .../main/java/org/videolan/resources/Constants.kt  |   2 +
 .../src/org/videolan/vlc/MediaSessionCallback.kt   |  14 +-
 .../src/org/videolan/vlc/PlaybackService.kt        |  25 ++-
 .../org/videolan/vlc/media/MediaSessionBrowser.kt  | 226 +++++++++++++--------
 4 files changed, 174 insertions(+), 93 deletions(-)

Diff:   https://code.videolan.org/videolan/vlc-android/commit/21ebae6998fb0f915e59aa9f59e18d885927950c