Add staggered workspace animation to keyguard unlock animation.

Added behind FeatureFlag.KEYGUARD_ANIMATION due to dependency on
Ie94ab8ecd35e9dcc28d0b8f7aaeb058e15b0f80b.

Added dynamic resource unlock_staggered_velocity_dp_per_s so that the
animation can be tuned.

Bug: 151238866
Change-Id: I4d349d32cc7d86be3cdc582c2a7c565be2931444
diff --git a/res/values/config.xml b/res/values/config.xml
index df0f233..6c239bd 100644
--- a/res/values/config.xml
+++ b/res/values/config.xml
@@ -142,6 +142,7 @@
 
     <item name="staggered_damping_ratio" type="dimen" format="float">0.7</item>
     <item name="staggered_stiffness" type="dimen" format="float">150</item>
+    <dimen name="unlock_staggered_velocity_dp_per_s">3dp</dimen>
 
     <!-- Swipe up to home related -->
     <dimen name="swipe_up_fling_min_visible_change">18dp</dimen>
@@ -170,6 +171,7 @@
 
         <item>@dimen/staggered_damping_ratio</item>
         <item>@dimen/staggered_stiffness</item>
+        <item>@dimen/unlock_staggered_velocity_dp_per_s</item>
 
         <item>@dimen/swipe_up_fling_min_visible_change</item>
         <item>@dimen/swipe_up_y_overshoot</item>