Added wztoeHandler & ethernetWrapper & wztoeTestSuite

[OpusK]

wztoeHandler

To more easily access the wztoe register and supplement socket.h and wizchip_conf.h.

• setTOETimerTickTo100US()

• setSocketRetryTimeMsAndCount()

• setSocketTCPKeepAliveTime()

• getLocalNetInfoPointer()

• getSocketDestinationNetInfo()

• getSocketStatus()

ethernetWrapper

It serves as an example of how to create an Ethernet application using 'wztoeHandler', 'socket', 'wizchip_conf', or to help create an ethernet application.

• initEthernetStatic()

• initEthernetDHCP()

• maintainDHCP()

• openSocketAsClient()

• openSocketAsServer()

• connectToServerDomain()

• connectToServerIP()

• disconnectTCPConnection()

• isTCPSocketConnected() - include passive close function (refer to link for TCP state diagram)

• sendDataTCP()

• sendDataUDP()

• receiveDataTCP()

• receiveDataUDP()

• getSocketReceivedDataSize()

• openSocketDHCPAndGetIpAddress()

• openSocketDNSAndGetIpAddress()

wztoeTestSuite

Test code using ethernetWrapper

• initWZTOETestSuite()
• doTCPServerLoopback()
• doTCPClientLoopback()