feat: add TypeScript type definitions for base58.js

[Copilot]

• Create base58.d.ts TypeScript type definitions file
• Update package.json to include base58.d.ts in files array
• Update package.json exports to include types for base58.js
• Verify TypeScript types compile correctly
• Run tests to ensure everything works
• Address code review feedback - add third overload for better type safety
• Remove unrelated .gitignore change per review feedback
• Add documentation for base58 functions in README
• Add IETF base58 specification link to documentation

Original prompt

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This section details on the original issue you should resolve

<issue_title>Types: base58.js</issue_title>
<issue_description></issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Types: base58.js #26

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[ChALkeR]

@copilot remove unrelated change

[Copilot]

Done. Removed the .gitignore change in commit 0b4df81.

[ChALkeR]

@copilot Also add the same docs to README to corresponding sessions.

[Copilot]

@copilot Also add the same docs to README to corresponding sessions.

Added documentation for all base58 functions in README in commit 9a1a983.

[Copilot]

Pull request overview

This PR adds TypeScript type definitions for the base58.js module, improving type safety and developer experience when using this library in TypeScript projects.

Changes:

• Added comprehensive TypeScript type definitions in base58.d.ts with function overloads for different return types
• Updated package.json to include the types file in the distribution and configure proper type exports
• Enhanced README.md with detailed documentation for base58 functions and IETF specification link

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated no comments.

File	Description
base58.d.ts	New TypeScript type definitions file with proper overloads for fromBase58, toBase58, fromBase58xrp, and toBase58xrp functions, including JSDoc documentation
package.json	Added base58.d.ts to files array and configured exports with types field for proper TypeScript resolution
README.md	Added comprehensive documentation for base58 functions with descriptions and links to IETF specification

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