Building AutoGrid on Windows using MSVC and Meson

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This PR adds support for building AutoGrid on Windows using MSVC and Meson.

[rwxayheee]

Summary of changes

1. Minor revision on meson.build to:
   (1) Support build on Windows with MSVC
   (2) Ensure numerical consistency with Linux x86_64 build (validated)
   (3) Build the Windows .exe into a self-contained (portable) executable

2. Added a centralized win_compat.h/.cc to provide missing includes on Windows

3. Multiple minor changes are made because MSVC is stricter with string literals (has to be const char* not just char*)

4. Port paramdat2h.tch to an equivalent Python script to use on Windows

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Steps to install

1. Download this version (currently branch compat_win_fixes) of the code

2. Ensure that the target Windows system has the following:
   Python3, meson, ninja, MSVC
   (also recommended) micromamba, PowerShell, Git

3. Use the same exact commands to build AutoGrid with meson as outlined in README (https://github.com/ccsb-scripps/AutoGrid?tab=readme-ov-file#meson-newer-method)