feat(completions): Offer Nushell completions (#6366)

---------

Co-authored-by: David Knaack <davidkna@users.noreply.github.com>

Cargo.lock

@@ -437,6 +437,16 @@ dependencies = [
  "clap",
 ]
 
+[[package]]
+name = "clap_complete_nushell"
+version = "4.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "315902e790cc6e5ddd20cbd313c1d0d49db77f191e149f96397230fb82a17677"
+dependencies = [
+ "clap",
+ "clap_complete",
+]
+
 [[package]]
 name = "clap_derive"
 version = "4.5.28"
@@ -3093,6 +3103,7 @@ dependencies = [
  "chrono",
  "clap",
  "clap_complete",
+ "clap_complete_nushell",
  "deelevate",
  "dirs 6.0.0",
  "dunce",