feat(heap): code skeleton

src/heap/heap.c

@@ -0,0 +1,28 @@
+#include "vieter_heap.h"
+
+struct vieter_heap {
+    uint64_t size;
+};
+
+vieter_heap *vieter_heap_init() {
+    return NULL;
+}
+
+uint64_t vieter_heap_size(vieter_heap *heap) {
+    return heap->size;
+}
+
+void vieter_heap_free(vieter_heap *heap) {}
+
+
+vieter_heap_error vieter_heap_insert(vieter_heap *heap, uint64_t key, void *data) {
+    return vieter_heap_ok;
+}
+
+vieter_heap_error vieter_heap_pop(void **out, vieter_heap *heap) {
+    return vieter_heap_ok;
+}
+
+vieter_heap_error vieter_heap_peek(void **out, vieter_heap *heap) {
+    return vieter_heap_ok;
+}