chore: update server port to 3001 and remove unnecessary .gitkeep files

apps/csms/src/index.ts

@@ -9,7 +9,7 @@ app.get('/', (c) => {
 
 serve({
   fetch: app.fetch,
-  port: 20128
+  port: 3001
 }, (info) => {
   console.log(`Server is running on http://localhost:${info.port}`)
 })