C: Inline hot-path lexer peek helpers

[marcoroth]

This pull request moves frequently called lexer peek functions to static inline functions in the header. The cold-path functions remain in the lexer_peek_helpers.c file.

[pkg-pr-new]

npx https://pkg.pr.new/@herb-tools/formatter@1319

npx https://pkg.pr.new/@herb-tools/language-server@1319

npx https://pkg.pr.new/@herb-tools/linter@1319

commit: 1211c59

[github-actions]

🌿 Interactive Playground and Documentation Preview

A preview deployment has been built for this pull request. Try out the changes live in the interactive playground:

• Playground Preview
• Documentation Preview
• Website Preview

---

_{🌱 Grown from commit 1211c59}