Add Geb Backend Evaluator with some extra subcommands

[jonaprieto]

This PR introduces an evaluator for the Geb STLC interface/fragment and other related commands, including a REPL to interact with his backend.

• https://github.com/anoma/geb/blob/mariari/binaries/src/specs/lambda.lisp

We have included a REPL and support for commands such as read and eval here. Check out:

juvix dev geb --help

• Add Geb evaluator with the two basic eval strategies.
• Add quasi quoter: return morphisms from typed geb values.
• Add type/object inference for morphisms.
• All combined: morphisms-eval-to-morphisms
• Parse and pretty printer Geb values (without quoting them)
• Parse files containing Geb terms:
  • Saved in a .lisp file according to anoma/geb example (typed object).
  • Store in a .geb file simple as simple lisp expression.
• Add related commands to the CLI for dev geb:
  • Subcommand: eval
  • Subcommand: read
  • Subcommand: infer
  • Subcommand: repl
  • Subcommand: check
• Minor changes hom by !-> in the Geb prettyprinter
• Add tests for:
  • New subcommand (smoke tests)
  • Eval

Issues to solve after merging this PR:

• Add location to Geb ast for proper error location.
• Add tests for all related subcommands, e.g. check, and infer.
• Check compilation from Core to Geb: (run inferObject with the type provided by the core node).
• Update the vs code-plugin to load Geb repl and eval. (anoma/vscode-juvix@31994c8)