New Netbanx Hosted Payments API Support

[lukeholder]

Added support for the new Netbanx (Optimal Payments / Paysafe) Hosted Payments gateway API support.

Supports:

• Purchase (redirect)
• Authorize (redirect)
• Capture
• Refund

All new Netbanx customers are not allowed to use the old API anymore.

API Docs: https://developer.optimalpayments.com/en/documentation/hosted-payment-api/overview/

Tests for capture() and refund() (success and failure casses) still needed.

[lukeholder]

@greydnls once I get tests for refund and capture, as well as code formatting passing on travisCI, would you be the person to merge?

[delatbabel]

The official maintainer for this gateway is @borNfreee although any of the omnipay team can do the merge.

[lukeholder]

thanks @delatbabel will ping once ready.

[lukeholder]

This is my first time building a 'full' omnipay gateway, feedback welcome @borNfreee

[maks-rafalko]

I believe you should not commit any .idea/* files to this repository. Remove them please

[maks-rafalko]

@lukeholder Hello, I'm not a maintainer of this NetBanx omnipay repository, I'm just a person who created it initialy without commit/merge access.

In general, you PR looks good but please ping the real maintainer

[delatbabel]

Ping @barryvdh -- the omnipay repository has @borNfreee listed as the maintainer but I guess that should switch to one of the Omnipay team. Do you want to pick it up? NetBanx is EU so I guess closer to your sphere of influence than mine.

@borNfreee thanks for your work + code analysis.

[barryvdh]

@delatbabel To be honest, I never heard of this gateway and have no way of testing.

I'd rather make @borNfreee or @lukeholder a maintainer, as they both use it and clearly do have knowledge about this gateway. What do you think?

[lukeholder]

@barryvdh happy to put my hand up

[delatbabel]

@barryvdh happy to put my hand up

Clearly showing insufficient reluctance.

[lukeholder]

switched to new branch name so I can composer install my fork, so new pull request:

#5