Fully switch to AST analyzes

[pi0]

Syntax detects and code analyzes utils introduced since initial versions of mlly are Regexbased which are fast and fairly stable. However, they often come to limitations and edge-cases + make extracting more syntax information harder without risky and less stable solutions.

I am thinking of switching to a (native) AST parser in the next major version of mlly to make it more stable solution.