Update web script to handle headless web servers.

Co-authored-by: sigonasr2 <sigonasr2@gmail.com>

C++/scripts/md5

@@ -1,3 +1,3 @@
 build.sh:530634457ea9041267c05d4ced95eee1  -
 commit.sh:d03a46e721060c22ccb146e19d27e70a  -
-web.sh:3fdcf079bbabf079cc24c32fa7133c40  -
+web.sh:3229cb0053cd0ca4ea08cc90e0d50ad0  -

C++/scripts/web.sh

@@ -6,4 +6,9 @@ else
     em++ -std=c++17 -O2 -s ALLOW_MEMORY_GROWTH=1 -s MAX_WEBGL_VERSION=2 -s MIN_WEBGL_VERSION=2 -s USE_LIBPNG=1 $(find . -type f -name "*.cpp") -o ${PROJECT_NAME}.html -I pixelGameEngine.h
 fi
 
-emrun ${PROJECT_NAME}.html
+if [ "$1" == "headless" ]; then
+    echo "Running as headless web server"
+    emrun --no_browser ${PROJECT_NAME}.html
+else
+    emrun --serve_after_close ${PROJECT_NAME}.html
+fi