[Android] Add a warning feature to feature flags

[Nicolas Pomepuy]

vlc-android | branch: master | Nicolas Pomepuy <nicolas at videolabs.io> | Mon Oct 18 10:20:17 2021 +0200| [89eae6d230bc6c2f60cbb4ff7da32e24dfd006f9] | committer: Nicolas Pomepuy

Add a warning feature to feature flags

> https://code.videolan.org/videolan/vlc-android/commit/89eae6d230bc6c2f60cbb4ff7da32e24dfd006f9
---

 .../resources/src/main/res/values/strings.xml      |   3 +-
 .../ui/preferences/PreferencesOptional.kt          |  21 +++++
 .../res/layout/dialog_feature_flag_warning.xml     |  94 ++++++++++++++++++
 .../vlc-android/res/layout/swipe_to_unlock.xml     |   2 +-
 .../vlc/gui/dialogs/FeatureFlagWarningDialog.kt    | 105 +++++++++++++++++++++
 .../vlc/gui/preferences/PreferencesOptional.kt     |  29 +++++-
 .../org/videolan/vlc/util/FeatureFlagManager.kt    |   4 +-
 7 files changed, 250 insertions(+), 8 deletions(-)

Diff:   https://code.videolan.org/videolan/vlc-android/commit/89eae6d230bc6c2f60cbb4ff7da32e24dfd006f9