API clients: Extract into a package (#111810)

Co-authored-by: Tom Ratcliffe <tom.ratcliffe@grafana.com>
Co-authored-by: Alex Khomenko <Clarity-89@users.noreply.github.com>

.github/CODEOWNERS

@@ -741,6 +741,9 @@
 # @grafana/test-utils
 /packages/grafana-test-utils @grafana/grafana-frontend-platform
 
+# @grafana/api-clients
+/packages/grafana-api-clients/ @grafana/grafana-frontend-platform @grafana/grafana-search-navigate-organise
+
 # root files, mostly frontend
 /.browserslistrc @grafana/frontend-ops
 /package.json @grafana/frontend-ops
@@ -959,7 +962,6 @@ playwright.storybook.config.ts @grafana/grafana-frontend-platform
 /public/app/features/transformers/timeSeriesTable/ @grafana/dataviz-squad @grafana/app-o11y-visualizations
 /public/app/features/users/ @grafana/access-squad
 /public/app/features/variables/ @grafana/dashboards-squad
-/public/app/features/preferences/ @grafana/grafana-frontend-platform
 /public/app/features/bookmarks/ @grafana/grafana-search-navigate-organise
 /public/app/plugins/panel/* @grafana/dataviz-squad
 /public/app/plugins/panel/alertlist/ @grafana/alerting-frontend
@@ -1055,13 +1057,10 @@ playwright.storybook.config.ts @grafana/grafana-frontend-platform
 /scripts/trigger_windows_build.sh @grafana/grafana-developer-enablement-squad
 /scripts/cleanup-husky.sh @grafana/frontend-ops
 /scripts/verify-repo-update/ @grafana/grafana-developer-enablement-squad
-/scripts/generate-rtk-apis.ts @grafana/grafana-frontend-platform
-/scripts/process-specs.ts @grafana/grafana-frontend-platform
 /scripts/generate-alerting-rtk-apis.ts @grafana/alerting-frontend
 /scripts/levitate-parse-json-report.js @grafana/plugins-platform-frontend
 /scripts/levitate-show-affected-plugins.js @grafana/plugins-platform-frontend
 /scripts/codemods/explicit-barrel-imports.cjs @grafana/frontend-ops
-/scripts/rtk-client-generator/ @grafana/grafana-search-navigate-organise
 
 /scripts/codeowners-manifest/ @grafana/dataviz-squad
 /scripts/test-coverage-by-codeowner.js @grafana/dataviz-squad