Add border API to surface control

See go/sf-box-shadows-api for more details

Bug: b/367464660
Flag: com.android.window.flags.enable_border_settings
Test: atest SurfaceFlinger_test
Change-Id: I1190edb97693004d9f46058fd0165451470a65b3
diff --git a/libs/gui/Android.bp b/libs/gui/Android.bp
index 158c548..2117c98 100644
--- a/libs/gui/Android.bp
+++ b/libs/gui/Android.bp
@@ -93,6 +93,7 @@
         "android/gui/StalledTransactionInfo.aidl",
         "android/**/TouchOcclusionMode.aidl",
         "android/gui/TrustedOverlay.aidl",
+        "android/gui/BorderSettings.aidl",
     ],
 }