Improved schema

[tdelmas]

• If max_range_metters is missing, do not report propulsion_type as missing, only max_range_metters (propulsion_type is now reported missing only when propulsion_type is present with a value of "electric", "electric_assist" or "combustion"). In v2.1, v2.2, v2.3-RC
• Vehicles must have lat and lon, or station_id (or the three) in v2.1, v2.2, v2.3-RC https://github.com/NABSA/gbfs/blob/master/gbfs.md#vehicle_statusjson
• vehicle_types_available : require a non-empty array in v2.1, v2.2, v2.3-RC
• Use "format": "date" to check YYYY-MM-DD dates instead of "pattern": "^[0-9]{4}-[0-9]{2}-[0-9]{2}$" (and fix when format were used with a regular expression) https://json-schema.org/understanding-json-schema/reference/string.html#dates-and-times
• default_pricing_plan_id and pricing_plan_ids are not inside vehicle_assets in v2.3-RC https://github.com/NABSA/gbfs/blob/master/gbfs.md#station_informationjson

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[PierrickP]

@isabelle-dr good to me 👍

[isabelle-dr]

Thank you for this contribution @tdelmas! I feel we made our lives harder with regex expressions here 😅