Add getLastAuthTime() to IKeystoreAuthorization

This returns the time (from CLOCK_MONOTONIC_RAW) that the specified user
last authenticated using the given authenticator.

Bug: 303839446
Test: atest keystore2_client_tests
Change-Id: Idd4c477365ffa556b7985d1d926dfa554680ff28
diff --git a/keystore2/tests/Android.bp b/keystore2/tests/Android.bp
index d33bf9f..e09b224 100644
--- a/keystore2/tests/Android.bp
+++ b/keystore2/tests/Android.bp
@@ -35,6 +35,9 @@
     test_config: "AndroidTest.xml",
 
     rustlibs: [
+        "android.hardware.security.secureclock-V1-rust",
+        "android.security.authorization-rust",
+        "libaconfig_android_hardware_biometrics_rust",
         "libbinder_rs",
         "libkeystore2_test_utils",
         "libnix",