Create the doc feature

Cargo.lock

@@ -190,6 +190,15 @@ dependencies = [
  "terminal_size",
 ]
 
+[[package]]
+name = "clap-markdown"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "325f50228f76921784b6d9f2d62de6778d834483248eefecd27279174797e579"
+dependencies = [
+ "clap",
+]
+
 [[package]]
 name = "clap_derive"
 version = "4.1.0"
@@ -217,6 +226,7 @@ name = "cmus-notify"
 version = "0.1.0"
 dependencies = [
  "clap",
+ "clap-markdown",
  "confy",
  "id3",
  "image",

Cargo.toml

@@ -17,6 +17,7 @@ log = { version = "0.4.17", optional = true }
 pretty_env_logger = { version = "0.4.0", optional = true }
 thiserror = "1.0.38"
 parse-display = "0.8.0"
+clap-markdown = { version = "0.1.3", optional = true }
 
 [dependencies.clap]
 version = "4.1.4"
@@ -30,7 +31,7 @@ features = ["toml_conf"]
 [features]
 lyrics = ["lrc"]
 debug = ["log", "pretty_env_logger"]
+docs = ["clap-markdown"]
 
 [dev-dependencies]
 test-context = "0.1.4"
-# clap-markdown = "0.1.3"