Download a folder from repository

What does this MR do?

This is based from the Community contribution MR from @kiameisomabes: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/20604.

Add links to download a folder from repository in different formats (zip, tar.gz, tar.bz2, or tar).

Add GetArchiveRequest to git-archive params.

Modifies Git::Repository#archive_metadata to append path to ArchivePrefix so it'll not hit the cache of repository archive when it already exists.

gitlab-ee MR is created as ee_compat_check fails: https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/10533.

What are the relevant issue numbers?

#24704 (closed)

TODOs

• Update GITALY_SERVER_VERSION when version required gets released.
• Update GITLAB_WORKHORSE_VERSION when version required gets released.
• Update gitaly-proto gem when version required gets released.

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated via this MR
• Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• Tested in all supported browsers
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the database guides
• Link to e2e tests MR added if this MR has Requires e2e tests label. See the Test Planning Process.
• Security reports checked/validated by reviewer

Closes #24704 (closed)

app/assets/stylesheets/framework/dropdowns.scss

@@ -287,7 +287,7 @@
     list-style: none;
     padding: 0 1px;
 
-    a,
+    a:not(.btn),
     button,
     .menu-item {
       @include dropdown-link;
@@ -351,6 +351,10 @@
     // Expects up to 3 digits on the badge
     margin-right: 40px;
   }
+
+  .dropdown-menu-content {
+    padding: $dropdown-item-padding-y $dropdown-item-padding-x;
+  }
 }
 
 .droplab-dropdown {