inital PyCallable work; isolate very well behaved usage of PyObject references behind RAII

src/PyCallable.h

@@ -0,0 +1,26 @@
+#pragma once
+#include "Common.h"
+#include "Python.h"
+
+class PyCallable
+{
+private:
+    PyObject* target;
+protected:
+    PyCallable(PyObject*);
+    ~PyCallable();
+    PyObject* call(PyObject*, PyObject*);
+};
+
+class PyTimerCallable: public PyCallable
+{
+private:
+    int interval;
+    int last_ran;
+    void call(int);
+public:
+    bool hasElapsed(int);
+    bool test(int);
+    PyTimerCallable(PyObject*, int, int);
+    PyTimerCallable();
+};