system/netd/server - add ClatUtils.{cpp,h} skeleton

Test: builds
Bug: 65674744
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I6a3a19d78fbacc3d260eeef374c2c7255d1b83f1
diff --git a/server/Android.bp b/server/Android.bp
index da1797b..1128252 100644
--- a/server/Android.bp
+++ b/server/Android.bp
@@ -56,6 +56,7 @@
     srcs: [
         "BandwidthController.cpp",
         "ClatdController.cpp",
+        "ClatUtils.cpp",
         "Controllers.cpp",
         "Dns64Configuration.cpp",
         "NetdConstants.cpp",
@@ -185,6 +186,7 @@
     srcs: [
         "BandwidthControllerTest.cpp",
         "ClatdControllerTest.cpp",
+        "ClatUtilsTest.cpp",
         "ControllersTest.cpp",
         "FirewallControllerTest.cpp",
         "IdletimerControllerTest.cpp",