docs: Algorand x402 Specification Proposal

[ehanoc]

Description

Submitting proposal for Algorand's x402 support.

The proposal takes advantages of Algorand's Native Atomic Transaction Groups, Instant finality and the ability to fee pooling to comply with the requirements of x402 protocol.

Future

Upon review and if accepted, we are committed to submit the actual implementation

• Algorand Foundation

[cb-heimdall]

🟡 Heimdall Review Status

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