feat: JWT saved in DB + logout api added

src/utils/removeTokensInDB.ts

@@ -0,0 +1,14 @@
+import User from '../model/User'
+
+export const removeTokensInDB = async (username: string, client_id: string) => {
+  const user = await User.findOne({ username })
+
+  const tokenObjIndex = user.tokens.findIndex(
+    (tokenObj: any) => tokenObj.clientid === client_id
+  )
+
+  if (tokenObjIndex > -1) {
+    user.tokens.splice(tokenObjIndex, 1)
+    await user.save()
+  }
+}