Feat: implement UI redesign

[avivash]

Description

Implementing the UI redesign from WAT into the the WalletAuth Template

Link to issue

https://github.com/webnative-examples/walletauth/issues/7

Type of change

• [x] New feature (non-breaking change that adds functionality)
• [x] Refactor (non-breaking change that updates existing functionality)

Screenshots/Screencaps

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