LRU-LIFO: Add Lufos, add LUFOs to Director

This represents our realization that we can represent qualia
inputs using LRU LIFOs

smocore/include/lruLifo.h

@@ -0,0 +1,32 @@
+#ifndef _LRU_LIFO_H
+#define _LRU_LIFO_H
+
+#include <vector>
+#include <cstdint>
+#include <mentalEntity.h>
+
+namespace smo {
+
+/**	EXPLANATION:
+ * LruLifo is a Last In First Out (LIFO) buffer with Least Recently Used (LRU)
+ * eviction. It is used to store a limited number of items, and the oldest item
+ * is removed when the buffer is full.
+ *
+ * This is used to store the most recent qualia to be processed by drctr.
+ * Drctr pops objects off the LruLifos in its main loop.
+ *
+ * Naturally since a mind is operating in dynamic world, we may very well be
+ * flooded with with too many qualia to process. Some qualia may just have to be
+ * dropped. So we may very well literally forget those qualia that get dropped
+ * from the LruLifos. (Because LruLifos have a fixed size.)
+ */
+
+class LruLifo {
+public:
+    LruLifo() = default;
+    ~LruLifo() = default;
+};
+
+} // namespace smo
+
+#endif