支持-微信普通服务商模式

[kanghuli]

针对服务商模式-完成如下场景测试:

• JsApi-服务商收款
• Native-服务商收款
• Notify-异步通知
• Query Order-查询订单
• Close Order-关闭订单
• Refund -退款
• QueryRefund-查询退款
• Shorten URL-转换短链

初始化

$gateway    = Omnipay::create('WechatPay');
$gateway->setAppId($config['app_id']);
$gateway->setMchId($config['mch_id']);
$gateway->setApiKey($config['api_key']);

//服务商模式下
$gateway->setSubmchId('子商户id'); 

//在小程序中使用服务商模式收款，查询订单等，此处为小程序app_id, 且必填， 非小程序场景不用设置。
//$gateway->setSubAppId('子商户app id'); 

• 备注 小程序-服务商模式说明 小程序-服务商收款-sub_appid使用说明

• 若检查无误，也希望 lokielse ，关注一下composer 包更新，感谢！

[codecov-io]

Codecov Report

Merging #62 into master will increase coverage by 0.07%. The diff coverage is 0%.

@@            Coverage Diff            @@
##           master     #62      +/-   ##
=========================================
+ Coverage    4.01%   4.09%   +0.07%     
=========================================
  Files          29      29              
  Lines        1020     757     -263     
=========================================
- Hits           41      31      -10     
+ Misses        979     726     -253

Impacted Files	Coverage Δ
src/Message/DownloadBillRequest.php	0% <0%> (ø)	:arrow_up:
src/Message/CloseOrderRequest.php	0% <0%> (ø)	:arrow_up:
src/Message/QueryOpenIdByAuthCodeRequest.php	0% <0%> (ø)	:arrow_up:
src/Message/BaseAbstractRequest.php	30% <0%> (-30%)	:arrow_down:
src/Message/QueryOrderRequest.php	0% <0%> (ø)	:arrow_up:
src/Message/CreateOrderRequest.php	3.96% <0%> (-1.17%)	:arrow_down:
src/Message/ShortenUrlRequest.php	0% <0%> (ø)	:arrow_up:
src/BaseAbstractGateway.php	33.33% <0%> (-9.53%)	:arrow_down:
src/Message/QueryRefundRequest.php	0% <0%> (ø)	:arrow_up:
src/Message/CreateMicroOrderRequest.php	0% <0%> (ø)	:arrow_up:
... and 29 more

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