Add total package count and improved pager

Fixes #988: The package list shows the total number of packages found,
before paging.

Other changes:
- Show text indicating which packages are currently displayed as well
  as the total number of results, e.g. "Showing 1 - 20 of 228"
- Show the pager only when there are more results than the page
  limit, e.g. if 27 results are returned an the page limit is 20
- Include individual page links for up to 7 pages
- Show "first" and "last" page links when more than 7 pages of results
  are returned
- Show an ellipsis before or after the page links to indicated there are
  more pages than the page links show
- Hide page links and ellipses on narrow screens

dashboard/src/client.ts

@@ -7,7 +7,6 @@ import { usePackageStore } from "./stores/package";
 export interface Client {
   package: api.PackageApi;
   storage: api.StorageApi;
-  upload: api.UploadApi;
   connectPackageMonitor: () => void;
 }
 
@@ -79,7 +78,6 @@ function createClient(): Client {
   return {
     package: new api.PackageApi(config),
     storage: new api.StorageApi(config),
-    upload: new api.UploadApi(config),
     connectPackageMonitor,
   };
 }