refactor: introduce PageHeader component (#6629)

* refactor: introduce PageHeader component

* feat: split up according to component structure guide

* fix: lint

* fix: label inconsistencies

* feat: refactor PageHeader (again)

* refactor: old impls

* fix: changes

* fix: rescan

* fix: prepr

* fix: dedupe

* fix: rev

* fix: lint

* fix: lint

---------

Co-authored-by: Prospector <6166773+Prospector@users.noreply.github.com>

apps/frontend/src/locales/ms-MY/index.json

@@ -2750,9 +2750,6 @@
   "profile.label.collection": {
     "message": "Koleksi"
   },
-  "profile.label.downloads": {
-    "message": "{count} {countPlural, plural, other {muat turun}}"
-  },
   "profile.label.joined": {
     "message": "Telah menyertai"
   },
@@ -2771,9 +2768,6 @@
   "profile.label.organizations": {
     "message": "Organisasi"
   },
-  "profile.label.projects": {
-    "message": "{count} {countPlural, plural, other {projek}}"
-  },
   "profile.label.saving": {
     "message": "Sedang menyimpan..."
   },
@@ -3188,9 +3182,6 @@
   "project.settings.visit-dashboard": {
     "message": "Kunjungi papan pemuka projek"
   },
-  "project.stats.downloads-label": {
-    "message": "{count, plural, other {muat turun}}"
-  },
   "project.status.archived.message": {
     "message": "{title} telah diarkibkan. {title} tidak akan menerima sebarang kemas kini lanjut melainkan pengarang memutuskan untuk menyaharkibkan projek."
   },