Add Object viewer for AST and TAST
- It transforms both AST and TAST into normalised format, that can be easily serialised (somewhat similar to the Universal TAST - we may want in the future make sure that the format is UAST, it would useful for also other projects/integrations)
- It displays the JSON document in nice object explorer working similarly to the Object Explorer in the browser's developer tools.
The TAST doesn't provide all the information that's available, but it's containing same information as
sprintf "%A" call. And potentially we can add way more useful info into it.
Closes #1 (closed)