Hack around missing process.h on Unix systems

Co-authored-by: Susko3 <Susko3@protonmail.com>

SDL3-CS/generate_bindings.py

@@ -24,6 +24,7 @@ Example:
 
 import json
 import pathlib
+import platform
 import re
 import subprocess
 import sys
@@ -362,6 +363,11 @@ def should_skip(solo_headers: list[Header], header: Header):
 def main():
     solo_headers = [make_header_fuzzy(header_name) for header_name in sys.argv[1:]]
 
+    if platform.system() != "Windows":
+        base_command.extend([
+            "--include-directory", csproj_root / "include"
+        ])
+
     prepare_sdl_source()
 
     sdl_api = get_sdl_api_dump()

SDL3-CS/include/process.h

@@ -0,0 +1 @@
+// dummy process.h when building for SDL_PLATFORM_WINDOWS on non-windows systems