Add a globalpingEnabled boolean to the Monitor model so users can
opt-in to global location checks per monitor during creation/edit.
## Changes
- Add globalpingEnabled field to server types, Mongoose model,
Joi validation, and repository mappers
- Add globalpingEnabled to client Monitor type, Zod schemas for
HTTP and ping monitors, and form defaults
- Add "Global monitoring" ConfigBox with Switch toggle to the
monitor creation/edit form, visible for HTTP and ping types
- Queue helper and monitorService now check globalpingEnabled
before running Globalping checks or fetching location data
- Add translation keys for the new form section
## Benefits
- Users can selectively enable Globalping on monitors that need it
rather than running location checks on every HTTP/ping monitor
- Reduces unnecessary API usage and keeps the UI clean for monitors
that only need local checks