Add initial stack implementation

include/data_structures/stack.h

@@ -0,0 +1,26 @@
+/**
+ * @file stack.h
+ *
+ * @brief Stack implementation, no frills
+ */
+#ifndef STACK_H
+#define STACK_H
+
+#define STACK_DEFINE(name, size)                                               \
+    static void* name##_data_array[size];                                             \
+    static Stack name  = { .data_array = name##_data_array, .top = -1, .max = size }; 
+
+typedef struct
+{
+    void** data_array;
+    int top;
+    int max;
+} Stack;
+
+void stack_reset(Stack* stack);
+bool stack_empty(Stack* stack);
+int stack_len(Stack* stack);
+void stack_push(Stack* stack, void* data);
+void* stack_pop(Stack* stack);
+
+#endif // STACK_H