Add a help page & logging when gateway starts

[roh26it]

Help Page and Logs

• This PR introduces a webpage that opens up when the gateway is started through node.js
• The webpage contains help information on using the gateway
• The logs tab provides realtime running logs for requests made through the gateway

How to try it out

• Pull this branch and run the gateway normally through the npm run dev:node command.

Motivation:

• Besides helping new users to consume gateway features fast, it also helps identify bugs faster through the logging section.

[roh26it]

Tested docker, npx deployments

[VisargD]

@roh26it - Should we also put a env or some flag check to enable the help page and logging? For example, production env might not need the UI.

[roh26it]

Aah, yes we could do that. Let me add a production check to env as well.

[roh26it]

@VisargD made the requested changes