add rlSessionByGamerTaskResult and restore default ctor for rlGamerHandle (#47)

rage/rlGamerHandle.hpp

@@ -11,6 +11,8 @@ namespace rage
         uint64_t m_rockstar_id;
         uint64_t m_unk;
 
+        inline rlGamerHandle() = default;
+
         inline rlGamerHandle(uint64_t rockstar_id) :
             m_rockstar_id(rockstar_id),
             m_unk(3)

rage/rlSessionByGamerTaskResult.hpp

@@ -0,0 +1,13 @@
+#pragma once
+#include "rlGamerHandle.hpp"
+#include "rlSessionInfo.hpp"
+
+namespace rage
+{
+	class rlSessionByGamerTaskResult
+	{
+	public:
+		rlGamerHandle m_gamer_handle{ 0 };
+		rlSessionInfo m_session_info;
+	};
+}