feat: add session expiry deletion script and scheduler

server/src/cli/clean.js

@@ -0,0 +1,12 @@
+import { removeExpired } from '../containers/expiryChecker.js'
+import connectDB from '../db.js'
+
+connectDB()
+  .then(removeExpired)
+  .then(() => {
+    process.exit(0)
+  })
+  .catch((err) => {
+    console.error(err)
+    process.exit(1)
+  })