add support for visa mobile (on-site)

[arti0090]

No description provided.

[lchrusciel]

Founded bugs:

• If you use number with + at the beginning you are not able to fill 9 numbers of phone
• if you proceed with wrong number, you end up with 500 error
  perhaps we should add two separate boxes for phone number and skip validation entirely

[lchrusciel]

Only required change for now: let's do something with 48 prefix. Either we should support +48 or omit this value in the first iteration.

After discussion with @jakubtobiasz we decided to hardcode 9 digits numbers and add +48 (if needed) on backend

[jakubtobiasz]

It'd be nice to have an E2E test here, as with VisaMobile it should be possible; check the BLIK E2E for a reference or just catch me on Slack

[lchrusciel]

The validation do not work as expected. I allow phone numbers to be 7 digits

Screen.Recording.2024-10-18.at.20.57.35.mov

[lchrusciel]

according to their docs, the phone number 12345678904 should not be accepted, but we cannot check it, as only 9 digits are accepted in our field. Let's make it at least 9 without upper limit

[lchrusciel]

Not needed. Should be removed