Support for dynamic TradeIcons (CoinsEngine)

[Len137]

Is your feature request related to a problem? Please describe.
I want to make an addon that adds support for CoinsEngine plugin, which allows creation of unlimited currencies. The problem is, that the register method requires a class and its impossible to add any parameter to it. This means that with the current system, I would need to hardcode all currencies I currently use making such addon unusable for anyone else and I would also need to manually update it every time I want to introduce a new currency on my server.

Describe the solution you'd like
A solution would be if the register method allowed for custom implementations of TradeIcon or any other way to pass custom parameters into it.

Describe alternatives you've considered
The easy alternative is just hardcoding every currency manually and that is not a good solution for most users of CoinsEngine or other plugins that support unlimited currencies.

Additional context
I found a feature request where some people do want support for CoinsEngine #495 .
And I also found this feature request #489 which asks for a feature that allows for adding new currencies without the need of API implementation, because it uses place holders.
If this feature I request was added, both of these feature requests could be easily implemented.

Discord contact: len_137 and queen_katya