feat: add redirect processing script

apps/scandic-redirect/README.md

@@ -6,3 +6,20 @@ This function will be called by the `web` app's middleware to check if the incom
 The "source of truth" for which URLs should be redirected where will be provided by the SEO team and put in a JSON file within this app.
 
 If no match for the incoming request is found, the request is passed on through the middleware.
+
+## Update the redirects from the source
+
+The Excel source file used is located at:
+
+https://scandichotelsab.sharepoint.com/:x:/s/921-ContentNewweb/ETGStOQAARtJhJXG9dy8ijYBccpmKhLVjS2SF_2E69QrAQ
+
+- Open it
+- Each domain/language has its own sheet
+- Export each sheet into their respective language code
+  - File > Export > Download as CSV UTF-8
+  - Save as [lang].csv in `./scripts/csv` folder
+- Run the `update` script target
+  - E.g. `yarn workspace @scandic-hotels/scandic-redirect update`
+- Commit and push the JSON files in `./netlify/functions/data`.
+- Create a PR
+- Profit!