[expansion] expansion rule structs and Python script to generate rules from dictionaries tree. Note that a canonical_index of -1 indicates that a given phrase is the canonical (saves space)

src/address_expansion_rule.h

@@ -0,0 +1,15 @@
+#include <stdlib.h>
+
+#include "constants.h"
+
+typedef struct address_expansion_rule {
+    char *phrase;
+    uint64_t dictionary;
+    int32_t canonical_index;
+} address_expansion_rule_t;
+
+typedef struct address_language_index {
+    char language[MAX_LANGUAGE_LEN];
+    uint32_t index;
+    size_t len;
+} address_language_index_t;