Create WifiAnnotations and jarjar into framework

@IntDef annotations defined in the Wifi module are
@hide and cannot be referenced from the rest of
framework. Create a separate class for Wifi
annotations that can be jarjar'ed into external
clients.

Bug: 140299412
Test: compiles
Change-Id: I5beac976b4d12fb2c01f46cb46f9c54ab54618ea
diff --git a/framework-jarjar-rules.txt b/framework-jarjar-rules.txt
new file mode 100644
index 0000000..d8af726
--- /dev/null
+++ b/framework-jarjar-rules.txt
@@ -0,0 +1,2 @@
+rule android.hidl.** android.internal.hidl.@1
+rule android.net.wifi.WifiAnnotations* android.internal.wifi.WifiAnnotations@1