fix: add types to exports in packages.json

[eng-cc]

Add types to exports in packages.json，to avoid not being able to locate the type definition file when using exports.

[what-the-diff[bot]]

PR Summary

• 📦 Added types to package.json Improved pkg file for better type support
• 🔄 Updated exports with new paths Streamlined pkg file exports, helping with better file access

[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (a959b09) 82.98% compared to head (f5bceba) 82.98%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #419 +/- ## ======================================= Coverage 82.98% 82.98% ======================================= Files 48 48 Lines 11874 11874 Branches 1280 1280 ======================================= Hits 9854 9854 Misses 2020 2020 ``` Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ChainSafe). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ChainSafe)

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