Added same-site policy for session options (#1381)

* Feat: added same-site policy for session options

* Feat: configurations in conf package to control the `SameSite` mode and `Secure` value of the session.

Co-authored-by: AaronLiu <abslant@126.com>

pkg/conf/conf.go

@@ -63,6 +63,8 @@ type cors struct {
 	AllowHeaders     []string
 	AllowCredentials bool
 	ExposeHeaders    []string
+	SameSite         string
+	Secure           bool
 }
 
 var cfg *ini.File

pkg/conf/defaults.go

@@ -30,6 +30,8 @@ var CORSConfig = &cors{
 	AllowHeaders:     []string{"Cookie", "X-Cr-Policy", "Authorization", "Content-Length", "Content-Type", "X-Cr-Path", "X-Cr-FileName"},
 	AllowCredentials: false,
 	ExposeHeaders:    nil,
+	SameSite:         "Default",
+	Secure:           false,
 }
 
 // SlaveConfig 从机配置