Adding native Fortran support in LLDB

As the LLVM Flang frontend matures, a significant gap has emerged between compilation and diagnostic capabilities. Currently, LLDB does not provide native debugging support for Fortran. This project aims to address that gap by building the essential foundation for native Fortran debugging. The goal is to deliver a functional debugging stack that allows users to: Inspect Variables: Support for scalar variables, function arguments, and return values. Data Structures: Inspection of static arrays, character strings, and derived types. Visibility: Implementation of module and global variable lookups. Expression Evaluation: Enabling basic arithmetic and variable inspection via the print command. To achieve this, a new Fortran TypeSystem, a dedicated Language Plugin, and a DWARFASTParser to interpret and traverse Fortran-specific DWARF metadata are needed.