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.

web_src/js/components/RepoActionView.vue

@@ -49,8 +49,8 @@
             {{ locale.artifactsTitle }}
           </div>
           <ul class="job-artifacts-list">
-            <li class="job-artifacts-item" v-for="artifact in artifacts" :key="artifact.id">
-              <a class="job-artifacts-link" target="_blank" :href="run.link+'/artifacts/'+artifact.id">
+            <li class="job-artifacts-item" v-for="artifact in artifacts" :key="artifact.name">
+              <a class="job-artifacts-link" target="_blank" :href="run.link+'/artifacts/'+artifact.name">
                 <SvgIcon name="octicon-file" class="ui text black job-artifacts-icon"/>{{ artifact.name }}
               </a>
             </li>