feat: display external feeds on the author profile page (#6096)

* feat: display RSS feeds on the individual author page

* lint: fix prettier errors

* refactor: rename external job file

* feat: add a new feed-card template

* refactor: remove comment and unused code

* chore: update version of the webdev-infra package

* fix: correct the testdata for the RSS feeds

* refactor: update the loop logic

* feat: implement the layout for mobile device

* feat: add the filter component

* feat: add filters on the author page

* fix: catch tweets.json not existing

* chore: update webdev-infra to 1.0.56

* chore: allow any key for virtual collection item type

* chore: remove unused posttype type

* chore: remove duplicate filtered element file

* style: use author instead of paged as paging alias

* feat: finalize new author pages

* chore: add web.dev author rss feeds

* fix: fix up checks

* chore: remove checkbox-group from rollup test bundle

* chore: remove obsolete tag-pill-list tests

* fix: correct styling for clear filters button

* chore: last fixes, handbook updates

---------

Co-authored-by: Matthias Rohmer <[email protected]>

package.json

@@ -94,7 +94,7 @@
     "unistore": "^3.5.2",
     "uslug": "^1.0.4",
     "web-vitals": "^3.1.1",
-    "webdev-infra": "1.0.55",
+    "webdev-infra": "1.0.56",
     "xss": "^1.0.14"
   },
   "optionalDependencies": {