Declare a feature flag for BFGS Managed Network Access

Bug: 304347838
Test: presubmit - the flag is unused for now
Change-Id: I95564e9a2d84849e4a22e23d9e31de0a1d296294
diff --git a/services/core/java/com/android/server/am/flags.aconfig b/services/core/java/com/android/server/am/flags.aconfig
index a770b66..2ed079a 100644
--- a/services/core/java/com/android/server/am/flags.aconfig
+++ b/services/core/java/com/android/server/am/flags.aconfig
@@ -29,3 +29,10 @@
     description: "Disable BOOT_COMPLETED broadcast FGS start for certain types"
     bug: "296558535"
 }
+
+flag {
+    name: "bfgs_managed_network_access"
+    namespace: "backstage_power"
+    description: "Restrict network access for certain applications in BFGS process state"
+    bug: "304347838"
+}