add option to patch lua with UTF8 support

scripts/build.sh

@@ -22,6 +22,7 @@ show_help() {
   echo "-B --bundle               Create an App bundle (macOS only)"
   echo "-P --portable             Create a portable binary package."
   echo "-O --pgo                  Use profile guided optimizations (pgo)."
+  echo "-U --windows-lua-utf      Use the UTF8 patch for Lua."
   echo "                          macOS: disabled when used with --bundle,"
   echo "                          Windows: Implicit being the only option."
   echo
@@ -35,6 +36,9 @@ main() {
   local bundle
   local portable
   local pgo
+  local patch_lua
+
+  local lua_subproject_path
 
   for i in "$@"; do
     case $i in
@@ -76,6 +80,10 @@ main() {
         pgo="-Db_pgo=generate"
         shift
         ;;
+      -U|--windows-lua-utf)
+        patch_lua="true"
+        shift
+        ;;
       *)
         # unknown option
         ;;
@@ -103,6 +111,11 @@ main() {
     $pgo \
     "${build_dir}"
 
+  lua_subproject_path=subprojects/lua-*/
+  if [[ $patch_lua == "true" ]] && [[ ! -z $force_fallback ]] && [[ -d $lua_subproject_path ]]; then
+    patch -d $lua_subproject_path -p1 --forward < resources/windows/001-lua-unicode.diff
+  fi
+
   meson compile -C "${build_dir}"
 
   if [ ! -z ${pgo+x} ]; then