Added Description Field for Secrets and Variables (#33526)

Fixes #33484

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

modules/structs/secret.go

@@ -10,6 +10,8 @@ import "time"
 type Secret struct {
 	// the secret's name
 	Name string `json:"name"`
+	// the secret's description
+	Description string `json:"description"`
 	// swagger:strfmt date-time
 	Created time.Time `json:"created_at"`
 }
@@ -21,4 +23,9 @@ type CreateOrUpdateSecretOption struct {
 	//
 	// required: true
 	Data string `json:"data" binding:"Required"`
+
+	// Description of the secret to update
+	//
+	// required: false
+	Description string `json:"description"`
 }