Closes #68 🐔️👍️
Approved-by: belazy <aarthuur01@gmail.com>
Approved-by: loutr <loutr@crans.org>

🦀️🍰🦀️🍰🦀️🍰

* chore(nix): Bump dependencies

* chore(clippy): Remove useless prefix/suffix (clippy::module_name_repetitions)

* chore(clippy): Prevent failed fallback (clippy::default_fallback_numeric)

* chore(parser): Modify parser hierarchy

* fix(fmt): Reduce chain line to 90 columns

* fix(proost): Fix documentation issues

* fix(evaluator): Move out display function, since self is not used

* chore(clippy): Use Self when possible (clippy::use_self)

* fix(kernel): Use safe conversion char -> u8 instead

* chore(clippy): Use explicit lifetime name (clippy::single_char_lifetime_names)

* chore(clippy): Use explicit unreachable/control-flow operator when needed

* chore(clippy): Use to_owned() when possible (clippy::inefficient_to_string + clippy::str_to_string)

* chore(clippy): Use specific function for map function (clippy::map_unwrap_or + clippy::option_if_let_else)

* chore(clippy): Use correct pattern-matching (clippy::pattern_type_mismatch)

* chore(clippy): Apply must_use (clippy::must_use_candidate clippy::return_self_not_must_use)

* chore(clippy): Modify two-arm matches into if-let (clippy::single_match_else)

* fix(declaration): Made struct only-crate public

* chore(clippy): Use const qualifier when possible (clippy::missing_const_for_fn)

* chore(clippy): Use core instead of std (clippy::alloc_instead_of_core + clippy::std_instead_of_core)

* chore(clippy): Inline format args (clippy::uninlined_format_args)

* chore(clippy): Add LTO hints (clippy::missing_inline_in_public_items)

* chore(clippy): [Non-test only] Remove wildcard import (enum_glob_use + wildcard_imports)

* chore(clippy): Add semicolon when nothing is returned (semicolon_if_nothing_returned)

* feat(clippy): Enable clippy lints

* chore(workspace): Improve cargo workspace for dependencies