[REFACTOR] add Icon to webhook.Interface

services/webhook/wechatwork.go

@@ -6,6 +6,7 @@ package webhook
 import (
 	"context"
 	"fmt"
+	"html/template"
 	"net/http"
 	"strings"
 
@@ -21,6 +22,10 @@ type wechatworkHandler struct{}
 func (wechatworkHandler) Type() webhook_module.HookType       { return webhook_module.WECHATWORK }
 func (wechatworkHandler) Metadata(*webhook_model.Webhook) any { return nil }
 
+func (wechatworkHandler) Icon(size int) template.HTML {
+	return imgIcon("wechatwork.png", size)
+}
+
 func (wechatworkHandler) FormFields(bind func(any)) FormFields {
 	var form struct {
 		forms.WebhookForm