[DeviceService] Move PowerMonitor interfaces, client lib, impl to live in Device Service

services/device/public/cpp/power_monitor/BUILD.gn

Index: services/device/public/cpp/power_monitor/BUILD.gn
diff --git a/device/power_monitor/public/cpp/BUILD.gn b/services/device/public/cpp/power_monitor/BUILD.gn
similarity index 85%
rename from device/power_monitor/public/cpp/BUILD.gn
rename to services/device/public/cpp/power_monitor/BUILD.gn
index d586540b678491a529fbe7aa01cc9877e83e0406..4613af60395e17268672144bf0753b8a8196fdb5 100644
--- a/device/power_monitor/public/cpp/BUILD.gn
+++ b/services/device/public/cpp/power_monitor/BUILD.gn
@@ -4,7 +4,7 @@
 
 import("//build/config/features.gni")
 
-source_set("cpp") {
+source_set("power_monitor") {
   sources = [
     "power_monitor_broadcast_source.cc",
     "power_monitor_broadcast_source.h",
@@ -17,6 +17,6 @@ source_set("cpp") {
   ]
 
   public_deps = [
-    "//device/power_monitor/public/interfaces",
+    "//services/device/public/interfaces",
   ]
 }