[Feature Request] Feature Title Here

Problem Statement

I need to have custom functions with the same name, that do different things based on the template using them. Please give us the ability to add in our own Evaluation Context property. This should be a very small change.

Proposed solution

Please give us the ability to add Evaluation Context.

Add it to the parse value here, make the default value null.
https://github.com/microsoft/AdaptiveCards/blob/d05c6d8d60bae71e56c47208061a0c5aa6ca6fcb/source/dotnet/Library/AdaptiveCards.Templating/AdaptiveCardsTemplateVisitor.cs#L680

And here is that line in the other library.
https://github.com/microsoft/botbuilder-dotnet/blob/ed06db29062d26c0ffbaf1807e8728ba3eacc017/libraries/AdaptiveExpressions/Expression.cs#L147

Alternatives or Workarounds

I will make the functions have separate names. This is not how our library currently handles it.

Start in source/dotnet/Library/AdaptiveCards.Templating/AdaptiveCardsTemplateVisitor.cs at the linked parse-value location, then compare the Evaluation Context handling in botbuilder-dotnet's Expression.cs. Done means the templating library accepts a caller-provided Evaluation Context while retaining null as the default.