Research the effort required to support terraform-cdk

[pistazie]

It might be easy to add CDK-Dia support for terraform-cdk with a low amount of effort. this is because terraform-cdk has a Constructs Tree, which is the base according to which CDK-Dia creates a diagram.

Open questions in order to estimate the effort required:

• How does TF-CDK expose its construct tree?
• What is the structure/schema of the tree and is it the same as AWS-CDK's JSON construct tree?