Protect DAB endpoints against DDOS attacks

[severussundar]

Original ask from user: Discussions link

To protect DAB GraphQL endpoint against DDOS attack,

1. Limit the size of GraphQL query response. Related issue: #1577
2. Introduce a property in the config file to make timeout (for the GraphQL API response) configurable.

[seantleonard]

Let's use the original item instead of creating a duplicate. The original is more targeted at what capability we are trying to add. This issue is a positive side effect.