Implement Address::from_string with checksum validation

[Emrys02]

Instantiating an address from raw user input requires immediate validation to catch typos or corrupted checksums before interacting with the RPC.

Implementation Guidelines

Key Files: crates/core/src/types/.

• Add from_string to the Address implementation using stellar_strkey::Strkey::from_string.
• Return a PrismError if the parsing fails.

Expectations

What done looks like: The system refuses to instantiate Address if the underlying strkey validation fails.

For any question, reach me on Discord: emry_ss

[Jumongweb]

@Jumongweb has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

Hi maintainer, i will to solve this issue

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Congratulations, @Jumongweb! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on March 30, 2026.

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[drips-wave]

This issue has been completed by @Jumongweb as part of the Stellar Wave Program's 3rd Wave 🥳

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