Update Blade component to accept currency objects

[hkan]

This change enables app templates to be shorter.

$currency = \Akaunting\Money\Currency::GBP();

// Before this PR, this template would throw an error:
<x-money amount="1000" :currency="$currency" />

// One would have to do this:
<x-money amount="1000" :currency="$currency->getCurrency()" />

Now it works. It's no longer a requirement to pass the 3-character string of the currency.

[hkan]

Hi @denisdulici, have you or someone in the company had a chance to take a look? Can I somehow help get this merged?