Add input flags for event verification

We will try to roll them out to improve the correctness of the input
streams.

Bug: 271455682
Test: atest inputflinger_tests
Change-Id: I03ad327cf86b19220b5a6344b77b446dd7360ab9
diff --git a/libs/input/input_flags.aconfig b/libs/input/input_flags.aconfig
new file mode 100644
index 0000000..1f29a00
--- /dev/null
+++ b/libs/input/input_flags.aconfig
@@ -0,0 +1,15 @@
+package: "com.android.input.flags"
+
+flag {
+  name: "enable_outbound_event_verification"
+  namespace: "input"
+  description: "Set to true to enable crashing whenever bad outbound events are detected inside InputTransport"
+  bug: "271455682"
+}
+
+flag {
+  name: "enable_inbound_event_verification"
+  namespace: "input"
+  description: "Set to true to enable crashing whenever bad inbound events are going into InputDispatcher"
+  bug: "271455682"
+}