Some numeric values don't match with VSF API json schema

[mtarld]

In Magento1 vsBridge, json response is created using json_encode with JSON_NUMERIC_CHECK flag.
I guess it's to have all ids in an integer format.

But, it creates some unexpected behaviors:

• cartId: Magento1 (contrary to Magento2), has integer values for cartId. but src/models/order.schema.json from vuestorefront-api defines it as string. Therefore, the schema cannot be validated
• Shipping addresses: postcode and telephone are converted to integer but again, the schema requires them as strings

It's possible to have same bugs elsewhere in magento1 vsBridge (i didn't tested everything)

[mtarld]

I began writing a workaround there: commit
But I still do not know if it's the best solution

[mtarld]

Issue will be resolved here: DivanteLtd/magento1-vsbridge#24