BluetoothSystemServer: add AutoOn metrics counter

Adding api to understand feature usage from system

Bug: 323060869
Bug: 316946334
Test: atest ServiceBluetoothRoboTests
Change-Id: I0b09d7845c123c04b1d9b9ee8eb4e3f8375db886
diff --git a/stats/express/catalog/bluetooth.cfg b/stats/express/catalog/bluetooth.cfg
index 6768534..a76df3c 100644
--- a/stats/express/catalog/bluetooth.cfg
+++ b/stats/express/catalog/bluetooth.cfg
@@ -49,3 +49,21 @@
     owner_email: "rotkiewicz@google.com"
     unit: UNIT_COUNT
 }
+
+express_metric {
+    id: "bluetooth.value_auto_on_supported"
+    type: COUNTER
+    display_name: "Auto on -- support"
+    description: "How many times the Bluetooth start with AutoOnFeature supported"
+    owner_email: "wescande@google.com"
+    unit: UNIT_COUNT
+}
+
+express_metric {
+    id: "bluetooth.value_auto_on_triggered"
+    type: COUNTER
+    display_name: "Auto on -- trigger"
+    description: "How many times the Bluetooth restart because of AutoOnFeature"
+    owner_email: "wescande@google.com"
+    unit: UNIT_COUNT
+}