Actions Artifacts support uploading multiple files and directories (#24874)

current actions artifacts implementation only support single file
artifact. To support multiple files uploading, it needs:

- save each file to each db record with same run-id, same artifact-name
and proper artifact-path
- need change artifact uploading url without artifact-id, multiple files
creates multiple artifact-ids
- support `path` in download-artifact action. artifact should download
to `{path}/{artifact-path}`.
- in repo action view, it provides zip download link in artifacts list
in summary page, no matter this artifact contains single or multiple
files.

routers/web/web.go

@@ -1210,7 +1210,7 @@ func registerRoutes(m *web.Route) {
 				m.Post("/cancel", reqRepoActionsWriter, actions.Cancel)
 				m.Post("/approve", reqRepoActionsWriter, actions.Approve)
 				m.Post("/artifacts", actions.ArtifactsView)
-				m.Get("/artifacts/{id}", actions.ArtifactsDownloadView)
+				m.Get("/artifacts/{artifact_name}", actions.ArtifactsDownloadView)
 				m.Post("/rerun", reqRepoActionsWriter, actions.RerunAll)
 			})
 		}, reqRepoActionsReader, actions.MustEnableActions)