## Problem solved
Short description of the bug fixed or feature added
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## PR-Codex overview
This PR exposes a new extension `publishContract` and refactors metadata handling in the `thirdweb` package.
### Detailed summary
- Exposed `publishContract` extension
- Refactored metadata handling in `deploy-metadata.ts`
- Updated `publisher.ts` with export changes
- Added new functions and types in `semver.ts`
- Introduced `publishContract` and related functions in `publish.ts`
- Added tests for `publishContract` in `publish.test.ts`
> The following files were skipped due to too many changes: `packages/thirdweb/src/extensions/thirdweb/write/publish.test.ts`
> ✨ Ask PR-Codex anything about this PR by commenting with `/codex {your question}`
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