Add shell completion (#251)

* add commandline argument to generate shell completion

* update changelog

* fixup! add commandline argument to generate shell completion

* Update option name and description

---------

Co-authored-by: David Peter <mail@david-peter.de>

Cargo.lock

@@ -128,6 +128,15 @@ dependencies = [
  "terminal_size",
 ]
 
+[[package]]
+name = "clap_complete"
+version = "4.5.55"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a5abde44486daf70c5be8b8f8f1b66c49f86236edf6fa2abadb4d961c4c6229a"
+dependencies = [
+ "clap",
+]
+
 [[package]]
 name = "clap_derive"
 version = "4.5.18"
@@ -222,6 +231,7 @@ dependencies = [
  "anyhow",
  "assert_cmd",
  "clap",
+ "clap_complete",
  "const_format",
  "libc",
  "owo-colors",