feat: hilbish native pager

[TorchedSammy]

adds a lua-written pager command (and library of some sorts)

• [x] Table of contents
• [x] Commands
  • [x] Jump to page number
• [x] Use in doc command
  • [x] Subdoc navigation
  • [x] Fix text getting cut off

---

• [ ] I have reviewed CONTRIBUTING.md.
• [x] My commits and title use the Conventional Commit format.

• [x] I have documented changes and additions in the CHANGELOG.md.