Add option to start interactive server for Parser dialect conversion

[frabert]

Known issues:

• The conversion pass uses a shared_ptr to the server in order to allow the pass to be cloneable -- it's not super elegant
• This currently asks the user for a lot of information about functions

[github-actions]

Cpp-Linter Report ⚠️

Some files did not pass the configured checks!

clang-format (v19.1.1) reports: 1 file(s) not formatted

• lib/vast/Conversion/Parser/ToParser.cpp

clang-tidy (v19.1.1) reports: 1 concern(s)

• include/vast/Conversion/Parser/Passes.hpp:22:14: error: [clang-diagnostic-error]

  'vast/Conversion/Parser/Passes.h.inc' file not found

     22 |     #include "vast/Conversion/Parser/Passes.h.inc"
        |              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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