Can not construct a BunqMeTabEntry to create a BunqMeTab

[mbernson]

Steps to reproduce:

1. Try to create a BunqMeTab (shared payment request)

What should happen:

1. I can create the required BunqMeTabEntry object for it

What happens:

1. The BunqMeTabEntry cannot be constructed

References

• Can not construct a BunqMeTabEntry for use with BunqMeTab::create() sdk_php#118

[OGKevin]

duplicate of #50

[OGKevin]

Closing in favor of #50