Add include_transactions option to getBlocks API

bdledger/api/query.proto

@@ -46,6 +46,12 @@ message BlocksRequest {
   int64 start_timestamp = 2;
   int64 end_timestamp = 3;
   repeated BlockFilter filters = 4;
+  enum IncludeTransactions {
+    NONE = 0; // 不包含交易数据
+    HASH = 1; // 包含交易哈希列表
+    FULL = 2; // 包含完整交易列表
+  }
+  IncludeTransactions include_transactions = 5;
 }
 message GetBlocksResponse {
   repeated Block blocks = 1;