[Admin] Support UGX wires using alternate currency converter

[LucyHackClub]

Describe the problem

I wish UGX was a currency on HCB when sending a wire (Wise doesn't have UGX).

https://column.com/docs/international-wires/supported-currencies

Describe the feature/solution (optional)

No response

[garyhtou]

@YodaLightsabr , can you please take a look at this one? Thanks!

[sampoder]

Our currency conversion gem doesn't support this

[YodaLightsabr]

This is possible to implement if we use an alternative currency converter, like Wise.