Build: Fix failing CSS asset paths (#95380)

* build(webpack): set publicpath and process urls to resolve assets correctly

* build(webpack): add back --progress to build

* Add local cdn

(cherry picked from commit 7a19523fa476fd5ff2d7669d116f5be462b100f5)

* chore(devenv): fix local_cdn path in ngnix conf

* chore(codeowners): add frontend-ops as owners of local_cdn docker block

---------

Co-authored-by: Andreas Christou <andreas.christou@grafana.com>

package.json

@@ -6,7 +6,7 @@
   "version": "11.4.0-pre",
   "repository": "github:grafana/grafana",
   "scripts": {
-    "build": "NODE_ENV=production nx exec --verbose -- webpack --config scripts/webpack/webpack.prod.js",
+    "build": "NODE_ENV=production nx exec --verbose -- webpack --config scripts/webpack/webpack.prod.js --progress",
     "build:nominify": "yarn run build -- --env noMinify=1",
     "dev": "NODE_ENV=dev nx exec -- webpack --config scripts/webpack/webpack.dev.js",
     "e2e": "./e2e/start-and-run-suite",