Auto merge of rust-lang#12747 - flip1995:clippy-dev-cli-derive, r=Alexendoo

Type safe CLI implementation for clippy-dev

Use the derive feature of `clap` to generate CLI of clippy-dev. Adding new commands will be easier in the future and we get better compile time checking through exhaustive matching.

---

I think I tested everything locally. But I would appreciate if the reviewer could go over it again, so that everything keeps working.

changelog: none

Author: bors

clippy_dev/Cargo.toml

@@ -1,11 +1,12 @@
 [package]
 name = "clippy_dev"
+description = "Clippy developer tooling"
 version = "0.0.1"
 edition = "2021"
 
 [dependencies]
 aho-corasick = "1.0"
-clap = "4.1.4"
+clap = { version = "4.4", features = ["derive"] }
 indoc = "1.0"
 itertools = "0.12"
 opener = "0.6"