Allow conversion from Binary to String

[Eloitor]

Description

Fix this

$> to :string to :binary "Hello world!"

══╡ Conversion Error ╞═══════════════════════════════════════════════════════════════════════════════════ <repl> ══

  Problem when converting value to given type

  Got value:
      [ :binary
              48 65 6C 6C 6F 20 77 6F 72 6C 64 21 
      ]

  Conversion to given type is not supported:
      :string

Type of change

• [ ] Code cleanup
• [ ] Unit tests (added or updated unit-tests)
• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] Enhancement (implementation update, or general performance enhancements)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation (documentation-related additions)

[drkameleon]

Ready to merge! 🚀