feat: add colors to --help/-h (#1553)

Cargo.lock

@@ -393,6 +393,16 @@ dependencies = [
  "clap_derive",
 ]
 
+[[package]]
+name = "clap-cargo"
+version = "0.15.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d546f0e84ff2bfa4da1ce9b54be42285767ba39c688572ca32412a09a73851e5"
+dependencies = [
+ "anstyle",
+ "clap",
+]
+
 [[package]]
 name = "clap_builder"
 version = "4.5.53"
@@ -2969,6 +2979,7 @@ dependencies = [
  "base64ct",
  "chrono",
  "clap",
+ "clap-cargo",
  "clap_complete",
  "clap_mangen",
  "color-eyre",

Cargo.toml

@@ -51,6 +51,7 @@ serde_json = "1.0.145"
 ignore = "=0.4.23"
 globset = "=0.4.16"
 base64ct = "<1.8.0"
+clap-cargo = "0.15.2"
 
 [patch.crates-io]
 mac-notification-sys = { git = "https://github.com/h4llow3En/mac-notification-sys" }

src/config.rs

@@ -729,7 +729,7 @@ impl ConfigFile {
 // TODO: i18n of clap currently not easily possible. Waiting for https://github.com/clap-rs/clap/issues/380
 // Tracking issue for i18n: https://github.com/topgrade-rs/topgrade/issues/859
 #[derive(Parser, Debug)]
-#[command(name = "topgrade", version)]
+#[command(name = "topgrade", version, styles = clap_cargo::style::CLAP_STYLING)]
 pub struct CommandLineArgs {
     /// Edit the configuration file
     #[arg(long = "edit-config")]