Port IdentityCredential HAL to AIDL.

This includes add a partial types-only HAL for KeyMaster for
HardwareAuthToken.

Bug: 111446262
Test: atest android.security.identity.cts
Test: VtsHalIdentityTargetTest
Test: android.hardware.identity-support-lib-test
Change-Id: I7a6254d33200bfd62269aed1957cbb2a84b16272
diff --git a/identity/aidl/default/identity-default.rc b/identity/aidl/default/identity-default.rc
new file mode 100644
index 0000000..d3b62c1
--- /dev/null
+++ b/identity/aidl/default/identity-default.rc
@@ -0,0 +1,3 @@
+service vendor.identity-default /vendor/bin/hw/android.hardware.identity-service.example
+    class hal
+    user nobody