Dynamic variables for providers

[NickRimmer]

Hey everyone 👋

I have an idea, to add supporting of multiple variables. For example {{aadV2Token scopes:@scopesForCurrentRequest}}.

It will make it possible to set provider parameters from local/environment variables. I quickly checked the code, and it seems pretty possible to implement. In the moment when we looking for functions to provide value, it just splits the original string by ' ' (space) and passes the original string to the found function. So at this moment we can additionally check the rest part of the string and provide values here whenever it is possible.

What do you think?