Implement manpage generation for goose-cli (#6980)

Signed-off-by: Rodolfo Olivieri <rodolfo.olivieri3@gmail.com>

Cargo.lock

@@ -1833,6 +1833,16 @@ version = "0.7.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c3e64b0cc0439b12df2fa678eae89a1c56a529fd067a9115f7827f1fffd22b32"
 
+[[package]]
+name = "clap_mangen"
+version = "0.2.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "439ea63a92086df93893164221ad4f24142086d535b3a0957b9b9bea2dc86301"
+dependencies = [
+ "clap",
+ "roff",
+]
+
 [[package]]
 name = "cliclack"
 version = "0.3.8"
@@ -4253,6 +4263,7 @@ dependencies = [
  "chrono",
  "clap",
  "clap_complete",
+ "clap_mangen",
  "cliclack",
  "console 0.16.2",
  "dotenvy",
@@ -8027,6 +8038,12 @@ dependencies = [
  "syn 2.0.114",
 ]
 
+[[package]]
+name = "roff"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "88f8660c1ff60292143c98d08fc6e2f654d722db50410e3f3797d40baaf9d8f3"
+
 [[package]]
 name = "ron"
 version = "0.12.0"