src: storage refactoring

* used the getFirst/getAll template methods throughout the SqliteStorage.
* renamed LambdaTask to TaskLambda to match our naming convention.

src/lib/utility/scheduling/TaskLambda.cpp

@@ -0,0 +1,32 @@
+#include "utility/scheduling/TaskLambda.h"
+
+TaskLambda::TaskLambda(std::function<void()> func)
+	: m_func(func)
+{
+}
+
+TaskLambda::~TaskLambda()
+{
+}
+
+void TaskLambda::enter()
+{
+}
+
+Task::TaskState TaskLambda::update()
+{
+	m_func();
+	return Task::STATE_FINISHED;
+}
+
+void TaskLambda::exit()
+{
+}
+
+void TaskLambda::interrupt()
+{
+}
+
+void TaskLambda::revert()
+{
+}