Initial upload manager

SiaDrive.Api/SiaApi.h

@@ -2,11 +2,11 @@
 #include "SiaCommon.h"
 #include "SiaCurl.h"
 #include "AutoThread.h"
+#include "UploadManager.h"
 
 NS_BEGIN(Sia)
 NS_BEGIN(Api)
 
-
 class CSiaDriveConfig;
 class AFX_EXT_CLASS CSiaBase
 {
@@ -151,6 +151,9 @@ public:
 		Property(std::uint64_t, TotalUsedBytes, public, private)
 		Property(std::uint32_t, TotalUploadProgress, public, private)
 
+	private:
+		CUploadManager _uploadManager;
+
 	protected:
 		virtual void AutoThreadCallback(const CSiaCurl& siaCurl, CSiaDriveConfig* siaDriveConfig) override;