chore: add rpm spec file (package for copr/fedora)

[TorchedSammy]

this is for the work in progress fedora copr at https://copr.fedorainfracloud.org/coprs/sammyette/Hilbish/

ON HOLD UNTIL 2.0 IS READY. there needs to be a stable version spec and for me to figure out if i should have separate packages for the git versions of the lua dependencies

relies on #176 to show the copr on the installation page

• [x] -git package
• [x] stable release package
• [x] Dependencies
  • [x] lunacolors
  • [x] succulent
  • [x] inspect
  • -git versions of deps?
• [x] List copr install instructions on website

---

• [x] 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.

[TorchedSammy]

they will be hosted separately.

[TorchedSammy]

actually the -git package spec will stay