[feature] Format the code and improve Mini Program authorization to o… (#473)

* [feature] Format the code and improve Mini Program authorization to obtain openid（miniprogram/auth/auth.go Code2Session）

* [feature] CheckEncryptedData (https://developers.weixin.qq.com/miniprogram/dev/api-backend/open-api/user-info/auth.checkEncryptedData.html)

* upgrade json error

* upgrade json error

Co-authored-by: houseme <houseme@outlook.com>

miniprogram/analysis/analysis.go

@@ -32,12 +32,12 @@ const (
 	getAnalysisVisitPageURL = "https://api.weixin.qq.com/datacube/getweanalysisappidvisitpage?access_token=%s"
 )
 
-//Analysis analyis 数据分析
+// Analysis analyis 数据分析
 type Analysis struct {
 	*context.Context
 }
 
-//NewAnalysis new
+// NewAnalysis new
 func NewAnalysis(ctx *context.Context) *Analysis {
 	return &Analysis{ctx}
 }