Squashed commit of the following: [raii_pyobjects]

closes #4

commit 8f060dc87b
Author: John McCardle <mccardle.john@gmail.com>
Date:   Fri Mar 15 22:20:03 2024 -0400

    Removing std::cout debugging statements

commit c9d5251c71
Author: John McCardle <mccardle.john@gmail.com>
Date:   Fri Mar 15 20:00:57 2024 -0400

    In-place map modification worked

commit 0a8f67e391
Author: John McCardle <mccardle.john@gmail.com>
Date:   Thu Mar 14 23:13:13 2024 -0400

    Stress test is failing: By removing a timer to a function (from inside that function?) I can immediately cause a segfault.

commit 05d9f6a882
Author: John McCardle <mccardle.john@gmail.com>
Date:   Tue Mar 12 22:27:12 2024 -0400

    wow, good test of Key and Click Callable classes. Cleanup, squash, and merge after I give it a lookover in daylight, though.

commit 972768eb26
Author: John McCardle <mccardle.john@gmail.com>
Date:   Tue Mar 12 21:02:48 2024 -0400

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

src/PyCallable.h

@@ -0,0 +1,45 @@
+#pragma once
+#include "Common.h"
+#include "Python.h"
+
+class PyCallable
+{
+protected:
+    PyObject* target;
+    PyCallable(PyObject*);
+    ~PyCallable();
+    PyObject* call(PyObject*, PyObject*);
+public:
+    bool isNone();
+};
+
+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();
+};
+
+class PyClickCallable: public PyCallable
+{
+public:
+    void call(sf::Vector2f, std::string, std::string);
+    PyObject* borrow();
+    PyClickCallable(PyObject*);
+    PyClickCallable();
+};
+
+class PyKeyCallable: public PyCallable
+{
+public:
+    void call(std::string, std::string);
+    //PyObject* borrow(); // not yet implemented
+    PyKeyCallable(PyObject*);
+    PyKeyCallable();
+};