Multi platform Plugin (#21388)

Co-authored-by: root <root@tjzj-inf-sci-k8s-bzz2-0183.tjzj.baidu.com>
Co-authored-by: Alex Nails <alex.nails@radixark.ai>
Co-authored-by: Alex Nails <alexj.nails@gmail.com>
Co-authored-by: root <root@tjzj-inf-sci-k8s-bzz2-0000.tjzj.baidu.com>
Co-authored-by: Mick <mickjagger19@icloud.com>

python/sglang/launch_server.py

@@ -56,6 +56,10 @@ if __name__ == "__main__":
         stacklevel=1,
     )
 
+    from sglang.srt.plugins import load_plugins
+
+    load_plugins()
+
     server_args = prepare_server_args(sys.argv[1:])
 
     try: