Define MACsec HAL and ref impl

Add MACsec HAL interface and reference implementation.
This allow OEM to store MACsec PSK key in secure storage and provide
functions to use that key,

Bug: 254108688
Test: atest VtsHalMacsecPSKPluginV1_0Test
Change-Id: Iecfe4828839a1dab81989bf9b178ae41c6f46b82
diff --git a/macsec/aidl/default/android.hardware.macsec.rc b/macsec/aidl/default/android.hardware.macsec.rc
new file mode 100644
index 0000000..0ff0e53
--- /dev/null
+++ b/macsec/aidl/default/android.hardware.macsec.rc
@@ -0,0 +1,3 @@
+service android.hardware.macsec /vendor/bin/hw/android.hardware.macsec-service
+    class early_hal
+    user nobody