feat: add custom "/static" mount folder used by custom pages

app.py

@@ -261,6 +261,7 @@ app_logger.info("build_frontend ok!")
 templates = Jinja2Templates(directory="templates")
 
 
+app.mount("/static", StaticFiles(directory=static_dist_folder, html=True), name="static")
 # important: the index() function and the app.mount MUST be at the end
 # samgis.html
 app.mount(CUSTOM_SAMGIS_URL, StaticFiles(directory=static_dist_folder, html=True), name="samgis")