1. 增加 GetDVRDeviceConfig函数

2. 增加 NET_DVR_FindNextFile_V30 函数
3. 增加 NET_DVR_FindFile_V30 函数
4. 增加 新的 Go 数据模型
5. 规范化 Go 数据模型
6. 调整部分的 C 头文件中的结构体,以修复 CGo 无法识别函数参数类型的问题(https://stackoverflow.com/questions/59353668/get-the-struct-from-c-to-golang)
7. 简化球机退出登陆
8. 实现 NVR 相关接口
9. 编写 NVR 接口测试用例

include/HCNetSDK.h

@@ -12816,7 +12816,7 @@ typedef struct
 }NET_DVR_EMAILPARA, *LPNET_DVR_EMAILPARA;
 
 //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
-typedef struct 
+typedef struct NET_DVR_NETAPPCFG
 {
     DWORD  dwSize;
     char  sDNSIp[16];                /* DNS<4E><53><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ */
@@ -13492,7 +13492,7 @@ typedef struct
 }NET_DVR_DEVICEINFO, *LPNET_DVR_DEVICEINFO;
 
 //NET_DVR_Login_V30()<29><><EFBFBD><EFBFBD><EFBFBD>ṹ
-typedef struct
+typedef struct NET_DVR_DEVICEINFO_V30
 {
     BYTE sSerialNumber[SERIALNO_LEN];  //<2F><><EFBFBD>к<EFBFBD>
     BYTE byAlarmInPortNum;                //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
@@ -13580,7 +13580,7 @@ typedef struct
     // bySupport7 & 0x40  <20><>ʾ<EFBFBD>豸<EFBFBD>Ƿ<EFBFBD>֧<EFBFBD><D6A7> <20><><EFBFBD>ӣ<EFBFBD><D3A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     // bySupport7 & 0x80  <20><>ʾ<EFBFBD>豸<EFBFBD>Ƿ<EFBFBD>֧<EFBFBD><D6A7> <20><><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>
     BYTE  byRes2;        //<2F><><EFBFBD><EFBFBD>
-}NET_DVR_DEVICEINFO_V30, *LPNET_DVR_DEVICEINFO_V30;
+} NET_DVR_DEVICEINFO_V30,*LPNET_DVR_DEVICEINFO_V30;
 
 typedef struct tagNET_DVR_DEVICEINFO_V40
 {
@@ -13781,7 +13781,7 @@ typedef struct
 }NET_DVR_FIND_DATA, *LPNET_DVR_FIND_DATA;
 
 //¼<><C2BC><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>(9000)
-typedef struct 
+typedef struct NET_DVR_FINDDATA_V30
 {
     char sFileName[100];//<2F>ļ<EFBFBD><C4BC><EFBFBD>
     NET_DVR_TIME struStartTime;//<2F>ļ<EFBFBD><C4BC>Ŀ<EFBFBD>ʼʱ<CABC><CAB1>
@@ -13843,7 +13843,7 @@ typedef struct
 
 
 //¼<><C2BC><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ṹ
-typedef struct 
+typedef struct NET_DVR_FILECOND
 {
     LONG lChannel;//ͨ<><CDA8><EFBFBD><EFBFBD>
     DWORD dwFileType;//¼<><C2BC><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>