#289 add damage unit

[Santonia27]

add the currency to the settings.toml file and the exposure buildings model.

[panosatha]

It is nice that the damage unit is now writtern in the settings toml. Right now it seems that in order to read that you need to access FiatModel.config["exposure"]["csv"]["damage_unit"].

Wouldn't it make more sense for this to be an attribute of the FiatModel.exposure.damage_unit?

[Santonia27]

Yes that makes sense, do you mean like this?

I already committed the changes

[panosatha]

I meant more from the object and class attributes and how to access them when you read in the model with HydoMT-FIAT.

So, when I use:
fiat_model = FiatModel(root=fiat_path, mode="r+")

fiat_model is an object with a couple of attributes, e.g.:

So, I think it would be nice if "damage_unit" was an attribute there the same way "unit" is.

[Santonia27]

okay I added it as a variable to the exposure model