Add metadata function to compute assetId from denoms

app/rust/include/rslib.h

@@ -35,6 +35,8 @@ parser_error_t rs_output_action_hash(spend_key_bytes_t *sk, output_plan_t *plan,
 parser_error_t rs_swap_action_hash(spend_key_bytes_t *sk, swap_plan_t *plan, uint8_t *output, size_t output_len);                                     
 parser_error_t rs_generic_action_hash(bytes_t *data, uint8_t action_type, uint8_t *output, size_t output_len);
 
+parser_error_t rs_get_asset_id_from_metadata(const bytes_t *metadata, uint8_t *asset_id, uint16_t asset_id_len);
+
 #ifdef __cplusplus
 }
-#endif
+#endif

app/src/tx_metadata.c

@@ -17,6 +17,7 @@
 #include <zxmacros.h>
 #include "parser_txdef.h"
 #include "tx_metadata.h"
+#include "rslib.h"
 
 
 parser_error_t metadata_parse(const uint8_t *data, size_t dataLen, tx_metadata_t *metadata, uint8_t metadataLen) {
@@ -79,3 +80,8 @@ parser_error_t metadata_parse(const uint8_t *data, size_t dataLen, tx_metadata_t
 
     return parser_ok;
 }
+
+parser_error_t metadata_toAssetId(const tx_metadata_t *metadata, uint8_t *assetId, uint16_t assetIdLen) {
+
+    return parser_ok;
+}

app/src/tx_metadata.h

@@ -22,6 +22,8 @@ extern "C" {
 
 parser_error_t metadata_parse(const uint8_t *data, size_t dataLen, tx_metadata_t *metadata, uint8_t metadataLen);
 
+parser_error_t metadata_toAssetId(const tx_metadata_t *metadata, uint8_t *assetId, uint16_t assetIdLen);
+
 
 #ifdef __cplusplus
 }