refactor: move from tuono_lib to tuono

[jacobhq]

Context & Description

Fixes #421.

With this feature, we:

• Update the dependency in each example to

  [dependencies]
  tuono = { package = "tuono_lib", path = "../../crates/tuono_lib/" }

• Replace each tuono_lib occurrences in the examples with tuono
• Update the tuono CLI to correctly replace the right strings
  • (add tests)
• Update tuono_lib_macros to correctly inject the tuono dependency
• Update the documentation

[Valerioageno]

As we agreed, I'm closing this PR. sorry about that 🙏🏽