refactor(lsm): allow modules to import other internal header files

lsm/include/lsm/trie.h

@@ -2,6 +2,7 @@
 #define LSM_TRIE
 
 #include "lsm.h"
+#include "lsm/str.h"
 
 /**
  * A struct representing a trie
@@ -22,4 +23,38 @@ lsm_error lsm_trie_init(lsm_trie **ptr);
  */
 void lsm_trie_free(lsm_trie *trie);
 
+/**
+ * Insert a new element into the trie using the specified key.
+ *
+ * @param trie trie to insert into
+ * @param key key to insert data with
+ * @param data data to insert
+ */
+lsm_error lsm_trie_insert(lsm_trie *trie, lsm_str *key, void *data);
+
+/**
+ * Search for an element in the trie.
+ *
+ * @param out where to store data opinter, if present
+ * @param trie trie to search in
+ * @param key key to search with
+ */
+lsm_error lsm_trie_search(void **data, lsm_trie *trie, lsm_str *key);
+
+/**
+ * Remove an element from the trie.
+ *
+ * @param out where to store the removed data pointer, if present.
+ * @param trie trie to remove from
+ * @param key key to remove
+ */
+lsm_error lsm_trie_remove(void **data, lsm_trie *trie, lsm_str *key);
+
+/**
+ * Return the size of a trie
+ *
+ * @param trie trie to return size for
+ */
+uint64_t lsm_trie_size(lsm_trie *trie);
+
 #endif