Update naming

bdchain/api/common.proto

@@ -0,0 +1,16 @@
+syntax = "proto3";
+
+package bdchain.api;
+
+option go_package = "bdchain/api/protobuf/common";
+option java_package = "bdchain.protobuf";
+option java_outer_classname = "CommonProto";
+option java_multiple_files = true;
+
+/* 事务类型 */
+enum TransactionType {
+    RECORD = 0; // 通用数据记录
+    MESSAGE = 1; // 消息
+    CONTRACT_CREATION = 2; // 合约创建
+    CONTRACT_INVOCATION = 3; // 合约调用
+}