Add support for Samsung Pay payment method

[ShankarSinghC]

This is to support for Samsung pay as a payment method.
This also needs to add a new field in merchant connector account create connector_wallet_details which is required to collect the required credentials for Samsung Pay. As this column in the data base stores the data in the encrypted format we also want to migrate apple pay certificates from metadata to connector_wallet_details, for which we are inserting apple pay details passed in the metadata to connector_wallet_details.

Once the frontend changes are done to pass the apple pay credentials in the connector_wallet_details this fallback can be removed.