SenseApis: Make attachDeviceReq async in drivers and SenseApiMgr

Slowly retrogressively making these sequences async

senseApis/xcbWindow/xcbWindow.cpp

@@ -273,8 +273,9 @@ static int xcbWindow_finalizeInd(void)
     return 0;
 }
 
-static int xcbWindow_attachDeviceReq(
-    const std::shared_ptr<smo::device::DeviceAttachmentSpec>& desc
+static void xcbWindow_attachDeviceReq(
+    const std::shared_ptr<smo::device::DeviceAttachmentSpec>& desc,
+	smo::sense_api::sal_mlo_attachDeviceReqCbFn cb
     )
 {
     g_attachedWindows.emplace_back(
@@ -283,11 +284,13 @@ static int xcbWindow_attachDeviceReq(
     std::cout << __func__ << ": Attached X11 window:\n  "
         << g_attachedWindows.back()->stringify()
         << "\n";
-    return 0;
+
+    cb(true);
 }
 
-static int xcbWindow_detachDeviceReq(
-    const std::shared_ptr<smo::device::DeviceAttachmentSpec>& spec
+static void xcbWindow_detachDeviceReq(
+    const std::shared_ptr<smo::device::DeviceAttachmentSpec>& spec,
+	smo::sense_api::sal_mlo_detachDeviceReqCbFn cb
     )
 {
     auto it = std::find_if(g_attachedWindows.begin(), g_attachedWindows.end(),
@@ -298,15 +301,18 @@ static int xcbWindow_detachDeviceReq(
 
     if (it == g_attachedWindows.end())
     {
-        std::cerr << __func__ << ": Device not found for detachment:\n"
-            << spec->stringify() << "\n";
-        return -1;
+		std::cerr << __func__ << ": Device not found for detachment:\n"
+			<< spec->stringify() << "\n";
+
+		cb(false);
+		return;
     }
 
     g_attachedWindows.erase(it);
     std::cout << __func__ << ": Detached X11 window device:\n"
         << spec->stringify() << "\n";
-    return 0;
+
+	cb(true);
 }
 
 // SenseApi descriptor