moved instantiation responsibility from App::add_sort

Invoker is now an object that we attach to the sortbinding rather than
the HasInvoker.
we now create a binding in main, then pass it on to App.
Timer now has a weak ptr to its invoker, so it could clean itself up.

src/sortui.cpp

@@ -1,6 +1,7 @@
 // for now juist CLI, print an arr, then print each it
 #include <memory>
 #include <string>
+#include <utility>
 #include <vector>
 
 #include <SFML/Graphics/Color.hpp>
@@ -14,6 +15,7 @@
 #include "core/app.hpp"
 #include "sessions.hpp"
 #include "sorters.hpp"
+#include "steppable.hpp"
 #include "timer.hpp"
 
 using namespace std::chrono;
@@ -34,8 +36,18 @@ int main() {
 	//create app with initialized dependencies
 	App myapp(std::move(myviewsession),std::move(mytimermanager));
 
-	//add and connect data
-	myapp.add_sort(myinput, "bsort");
+	//create binding
+	shared_ptr<Steppable> asort = make_sort(myinput, "bsort");
+	shared_ptr<Invoker> myinvoker = make_shared<Invoker>(asort);
+	SortBinding mysortbinding(myinput, asort, myinvoker);
+
+	Timer timer(0, myinvoker, chrono::milliseconds(250));
+	myapp.timermanager->add_timer(std::move(timer));
+
+	//add data and binding
+	myapp.add_sort(myinput, mysortbinding);
+
+
 
 	//actually start the app
 	myapp.run();