Add fnv1a, djb2, and ror13 hash plugins.

[blg-bin26]

Register the new non-cryptographic algorithms in rz-hash and add unit-test vectors so they are available from the CLI and covered by tests.

Co-authored-by agent: codex/gpt-5.3-codex-low

Your checklist for this pull request

• I've read the guidelines for contributing to this repository.
• I made sure to follow the project's coding style.
• I've documented every RZ_API function and struct this PR changes.
• I've added tests that prove my changes are effective (required for changes to RZ_API).
• I've updated the Rizin book with the relevant information (if needed).
• I've used AI tools to generate fully or partially these code changes and I'm sure the changes are not copyrighted by somebody else.

Detailed description

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Test plan

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Closing issues

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