chore(.env): Update example .env

This also adds an editor configuration for syntax highlighting

Author: OliverDudgeon

.env.local.example

@@ -29,3 +29,5 @@ KEYCLOAK_URL='https://squonk.informaticsmatters.org/auth'
 # Client ID and Secret of confidential Keycloak client
 AUTH0_CLIENT_ID='data-manager-ui-staging'
 AUTH0_CLIENT_SECRET='e32...daaa2d'
+
+# SENTRY_AUTH_TOKEN=""

.vscode/settings.json

@@ -14,5 +14,9 @@
     "editor.rulers": [
       100
     ]
+  },
+  "files.associations": {
+    ".env": "shellscript",
+    ".env.*": "shellscript",
   }
 }