meson: Add windows resource files

The generated resource files aren't exactly the same ones as the old
buildsystems generate. Previously "InternalName" and "OriginalFileName" were
mostly wrong / not set (despite being required), but that was hard to fix in
at least the make build. Additionally, the meson build falls back to a
"auto-generated" description when not set, and doesn't set it in a few cases -
unlikely that anybody looks at these descriptions in detail.

Author: Andres Freund <andres@anarazel.de>
Author: Nazir Bilal Yavuz <byavuz81@gmail.com>
Reviewed-by: Peter Eisentraut <peter.eisentraut@enterprisedb.com>

src/backend/utils/mb/conversion_procs/meson.build

@@ -29,8 +29,15 @@ encodings = {
 }
 
 foreach encoding, sources : encodings
+  source_files = files(sources)
+
+  if host_system == 'windows'
+    source_files += rc_lib_gen.process(win32ver_rc, extra_args: [
+      '--NAME', encoding])
+  endif
+
   backend_targets += shared_module(encoding,
-    sources,
+    source_files,
     kwargs: pg_mod_args,
   )
 endforeach