Libspinscale: Initial top-level SMO port to coroutine framework

We haven't ported everything. Just the top-level methods. We'll
dig in to the leaf stuff later. Surprisingly, this all went without
any real difficulties.

Runs like a charm on first try.

commonLibs/livoxProto1/livoxProto1.cpp

@@ -1,6 +1,6 @@
 #include <boostAsioLinkageFix.h>
 #include <stdexcept>
-#include <spinscale/callback.h>
+#include <spinscale/cps/callback.h>
 #include <boost/asio/posix/stream_descriptor.hpp>
 #include "livoxProto1.h"
 #include "device.h"
@@ -16,7 +16,7 @@ void livoxProto1_getOrCreateDeviceReq(
 	int commandTimeoutMs, int retryDelayMs,
 	const std::string& smoIp, uint8_t smoSubnetNbits,
 	uint16_t dataPort, uint16_t cmdPort, uint16_t imuPort,
-	sscl::Callback<livoxProto1_getOrCreateDeviceReqCbFn> callback
+	sscl::cps::Callback<livoxProto1_getOrCreateDeviceReqCbFn> callback
 )
 {
 	// Get the global DeviceManager instance
@@ -39,7 +39,7 @@ void livoxProto1_getOrCreateDeviceReq(
 
 void livoxProto1_destroyDeviceReq(
 	std::shared_ptr<livoxProto1::Device> device,
-	sscl::Callback<livoxProto1_destroyDeviceReqCbFn> callback
+	sscl::cps::Callback<livoxProto1_destroyDeviceReqCbFn> callback
 )
 {
 	auto& protoState = livoxProto1::getProtoState();
@@ -67,7 +67,7 @@ void livoxProto1_exit(void)
 
 void livoxProto1_device_enablePcloudDataReq(
 	std::shared_ptr<livoxProto1::Device> device,
-	sscl::Callback<livoxProto1_device_enablePcloudDataReqCbFn> callback
+	sscl::cps::Callback<livoxProto1_device_enablePcloudDataReqCbFn> callback
 )
 {
 	if (!device)
@@ -81,7 +81,7 @@ void livoxProto1_device_enablePcloudDataReq(
 
 void livoxProto1_device_disablePcloudDataReq(
 	std::shared_ptr<livoxProto1::Device> device,
-	sscl::Callback<livoxProto1_device_disablePcloudDataReqCbFn> callback
+	sscl::cps::Callback<livoxProto1_device_disablePcloudDataReqCbFn> callback
 )
 {
 	if (!device)
@@ -95,7 +95,7 @@ void livoxProto1_device_disablePcloudDataReq(
 
 void livoxProto1_device_getReturnModeReq(
 	std::shared_ptr<livoxProto1::Device> device,
-	sscl::Callback<livoxProto1_device_getReturnModeReqCbFn> callback
+	sscl::cps::Callback<livoxProto1_device_getReturnModeReqCbFn> callback
 )
 {
 	if (!device)