Expose max length of stay in the Public API property object

Problem Statement

• The max length of stay is a global property-level setting in Hospitable but is not exposed in the Public API (GET /v2/properties/{uuid}).
• The calendar returns min_days per date, but there is no corresponding max_days field — and the property object itself doesn't include a max_stay or max_nights field.
• This forces hosts to keep business logic in two places: the Hospitable dashboard and their own systems.

Current Workaround

• Hosts must manually check the max stay setting in the Hospitable dashboard and maintain it separately in their own systems.
• There is no API endpoint to retrieve this value programmatically.

Impact

• Operational overhead: hosts must maintain duplicate settings across two systems.
• Risk of inconsistency: if the max stay is updated in Hospitable but not in the host's external system, business rules may be violated.
• Lost time: manual synchronization between systems.

Proposed Solution

• Add a max_stay (or max_nights) field to the property object in the Public API (GET /v2/properties/{uuid}).
• This would return the global max length of stay setting for the property.

Unlock

• Hosts would be able to read the max length of stay directly from the API, eliminating the need to maintain duplicate settings and reducing the risk of inconsistencies.