Create rair-pong example dapp from empty sdk dapp

[RAIReth]

Add pong functionality to empty sdk dapp to show new developers the complete workflow to create a new functional dapp.

Requires creating new API points. 2 endpoints. 1 to keep track of the increments for the score. 2 decide winner/loser

Realtime communication with sockets to keep track of where paddle is.

This will still be difficult / complex due to real time nature of video games.

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Really important to show the complete workflow/process for how to build a new dapp. Requires building backend API endpoints

https://codesandbox.io/p/sandbox/pong-game-react-e1r8x?file=%2Fsrc%2FApp.js