refactor: remove entry code from trie

include/entry.h

@@ -0,0 +1,17 @@
+#ifndef LANDER_ENTRY
+#define LANDER_ENTRY
+
+#include <stdint.h>
+
+typedef enum entry_type { Redirect, Paste, Unknown } EntryType;
+
+typedef struct entry {
+  EntryType type;
+  char string[];
+} Entry;
+
+uint64_t entry_new(Entry **entry_ptr, EntryType type, const char *string);
+
+void entry_free(Entry *entry);
+
+#endif