Add API route to list org secrets (#26485)

- Add a new function `CountOrgSecrets` in the file
`models/secret/secret.go`
- Add a new file `modules/structs/secret.go`
- Add a new function `ListActionsSecrets` in the file
`routers/api/v1/api.go`
- Add a new file `routers/api/v1/org/action.go`
- Add a new function `listActionsSecrets` in the file
`routers/api/v1/org/action.go`

go-sdk: https://gitea.com/gitea/go-sdk/pulls/629

---------

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: techknowlogick <matti@mdranta.net>
Co-authored-by: Giteabot <teabot@gitea.io>

routers/api/v1/api.go

@@ -1298,6 +1298,9 @@ func Routes() *web.Route {
 				m.Combo("/{username}").Get(reqToken(), org.IsMember).
 					Delete(reqToken(), reqOrgOwnership(), org.DeleteMember)
 			})
+			m.Group("/actions/secrets", func() {
+				m.Get("", reqToken(), reqOrgOwnership(), org.ListActionsSecrets)
+			})
 			m.Group("/public_members", func() {
 				m.Get("", org.ListPublicMembers)
 				m.Combo("/{username}").Get(org.IsPublicMember).