Add a node.js example project with wallet and staking integration

[marc-aurele-besner]

Add a node.js example project with wallet and staking integration

Tasks

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1. Create reusable scripts to query balance and transfer tokens subspace/auto-sdk#32
   auto-consensus auto-utils example +3
   
2. Create reusable scripts to cover all staking functions subspace/auto-sdk#33
   auto-consensus example +2
   
3. Create a CLI to target all functionality subspace/auto-sdk#34
   example good first issue help wanted +3
   
4. Update root README to mention these example and CLI subspace/auto-sdk#70
   example +1
   
5. Deploy a live version of the NextJS example webapp subspace/auto-sdk#71
   example +1