feat: support railway template

main.py

@@ -1,5 +0,0 @@
-# entry point for online railway deployment
-from app import run
-
-if __name__ == '__main__':
-	run()

nixpacks.toml

@@ -0,0 +1,7 @@
+providers = ['python']
+
+[phases.setup]
+nixPkgs = ['python310']
+cmds = ['apt-get update','apt-get install -y --no-install-recommends ffmpeg espeak']
+[start]
+cmd = "python ./app.py"