Update Display Settings

curl --request PATCH \
  --url https://api.wacht.dev/settings/display-settings \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "logo_url": "<string>",
  "primary_color": "#0066CC",
  "secondary_color": "#F0F0F0",
  "font_family": "Inter, sans-serif",
  "app_name": "My App",
  "welcome_message": "<string>",
  "support_email": "jsmith@example.com",
  "terms_url": "<string>",
  "privacy_url": "<string>"
}'

{
  "logo_url": "<string>",
  "primary_color": "#0066CC",
  "secondary_color": "#F0F0F0",
  "font_family": "Inter, sans-serif",
  "app_name": "My App",
  "welcome_message": "<string>",
  "support_email": "jsmith@example.com",
  "terms_url": "<string>",
  "privacy_url": "<string>"
}