Changes to Search by model

added TirePressure subschema #2 to the data/items/wheels/items/front/tire_pressure response property oneOf list for the response status 200

added TirePressure subschema #2 to the data/items/wheels/items/rear/tire_pressure response property oneOf list for the response status 200

the data/items/wheels/items/front/tire_pressure response's property type changed from string to no type for status 200

the data/items/wheels/items/rear/tire_pressure response's property type changed from string to no type for status 200

added the required property data/items/powertrain to the response with the 200 status