feat: add aarna afi 802v2 ERC20 token metadata and logo

[s-pcode]

website : https://www.aarna.ai/
docs : https://docs.aarna.ai/
deployed contract addresses : https://docs.aarna.ai/resources/addresses

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Note

Adds Aarna token assets to the repo.

• New SVG logos for erc20:0xB68E430c56Ed9E548E864a68A60F9d41f993b32c and erc20:0xF30F62963CCE132F32306d7F18a8587958b30EA9 under icons/
• New ERC20 metadata JSON for afi 802v2, atvUSDC, and atvPTmax under metadata/, each referencing its logo

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