add FeatureFlag type to the dump / also sort them

Bug: 152660449

$ adb shell dumpsys activity service com.google.android.apps.nexuslauncher/com.android.quickstep.TouchInteractionService
SERVICE com.google.android.apps.nexuslauncher/com.android.quickstep.TouchInteractionService d4107aa pid=27740
  Client:
    DeviceFlags:
      APP_SEARCH_IMPROVEMENTS, defaultValue=true, mCurrentValue=true, mDefaultValueInCode=true
      ENABLE_HYBRID_HOTSEAT, defaultValue=false, mCurrentValue=false, mDefaultValueInCode=false
      ENABLE_SUGGESTED_ACTIONS_OVERVIEW, defaultValue=false, mCurrentValue=false, mDefaultValueInCode=false
      FOLDER_NAME_SUGGEST, defaultValue=true, mCurrentValue=true, mDefaultValueInCode=true
      HOTSEAT_MIGRATE_TO_FOLDER, defaultValue=false, mCurrentValue=false, mDefaultValueInCode=false
    DebugFlags:
      ADAPTIVE_ICON_WINDOW_ANIM, defaultValue=true, mCurrentValue=true
      ALWAYS_USE_HARDWARE_OPTIMIZATION_FOR_FOLDER_ANIMATIONS, defaultValue=false, mCurrentValue=false
      APPLY_CONFIG_AT_RUNTIME, defaultValue=true, mCurrentValue=true
      ASSISTANT_GIVES_LAUNCHER_FOCUS, defaultValue=false, mCurrentValue=false
      ENABLE_DATABASE_RESTORE, defaultValue=true, mCurrentValue=true
      ENABLE_DEEP_SHORTCUT_ICON_CACHE, defaultValue=true, mCurrentValue=true
      ENABLE_FIXED_ROTATION_TRANSFORM, defaultValue=true, mCurrentValue=true
      ENABLE_LAUNCHER_PREVIEW_IN_GRID_PICKER, defaultValue=true, mCurrentValue=true
      ENABLE_LSQ_VELOCITY_PROVIDER, defaultValue=true, mCurrentValue=true
      ENABLE_OVERVIEW_ACTIONS, defaultValue=true, mCurrentValue=false
      ENABLE_PREDICTION_DISMISS, defaultValue=false, mCurrentValue=false
      ENABLE_QUICK_CAPTURE_GESTURE, defaultValue=true, mCurrentValue=true
      ENABLE_QUICKSTEP_LIVE_TILE, defaultValue=false, mCurrentValue=false
      ENABLE_SELECT_MODE, defaultValue=true, mCurrentValue=true
      ENABLE_UNIVERSAL_SMARTSPACE, defaultValue=false, mCurrentValue=false
      FORCE_LOCAL_OVERSCROLL_PLUGIN, defaultValue=false, mCurrentValue=false
      KEYGUARD_ANIMATION, defaultValue=false, mCurrentValue=false
      MULTI_DB_GRID_MIRATION_ALGO, defaultValue=false, mCurrentValue=false
      PROMISE_APPS_IN_ALL_APPS, defaultValue=false, mCurrentValue=false
      PROMISE_APPS_NEW_INSTALLS, defaultValue=true, mCurrentValue=true
      QUICKSTEP_SPRINGS, defaultValue=true, mCurrentValue=true
      UNSTABLE_SPRINGS, defaultValue=false, mCurrentValue=false
      USE_SURFACE_VIEW_FOR_GRID_PREVIEW, defaultValue=true, mCurrentValue=true
    PluginManager:
      numEnabledPlugins=1
      numDisabledPlugins=0
      enabledPlugins=[ComponentInfo{com.android.launcher.plugins.AllAppsSearchPlugin/com.android.launcher.plugins.AllAppsSearch}]
      disabledPlugins=[]



Change-Id: Ifefc02683834e52e3b78f93861a90f97a72c01d8