adbd: add source/sink services.

Add some services that skip the service fd to see how much of a benefit
it'll be to eliminate it.

Test: adb raw source:$((300 * 1024 * 1024)) | pv > /dev/null
Test: dd if=/dev/zero bs=1M count=100 | pv | adb raw sink:$((100 * 1024 * 1024))
Change-Id: I042f25f85b16ae9869cb1f1e306d8671b024ed97
diff --git a/adb/adb.h b/adb/adb.h
index e2911e8..cdd6346 100644
--- a/adb/adb.h
+++ b/adb/adb.h
@@ -149,6 +149,10 @@
 #endif
 
 #if !ADB_HOST
+asocket* daemon_service_to_socket(std::string_view name);
+#endif
+
+#if !ADB_HOST
 int init_jdwp(void);
 asocket* create_jdwp_service_socket();
 asocket* create_jdwp_tracker_service_socket();