feat: Add option to 'command with space in name' in fixtures

* This triggers a bug in 'fish completion' script as described in https://github.com/python-poetry/poetry/issues/5929#issuecomment-1345580021
* Also adapt bash, zsh and fish sample output

tests/commands/completion/fixtures/bash.txt

@@ -42,7 +42,7 @@ _my_function()
             ;;
 
             ('spaced command')
-            opts="${opts} "
+            opts="${opts} --goodbye"
             ;;
 
         esac

tests/commands/completion/fixtures/command_with_space_in_name.py

@@ -2,9 +2,11 @@
 
 from cleo.commands.command import Command
 from cleo.helpers import argument
+from cleo.helpers import option
 
 
 class SpacedCommand(Command):
     name = "spaced command"
     description = "Command with space in name."
     arguments = [argument("test", description="test argument")]
+    options = [option("goodbye")]

tests/commands/completion/fixtures/fish.txt

@@ -37,3 +37,4 @@ complete -c script -A -n '__fish_seen_subcommand_from hello' -l option-without-d
 # list
 
 # 'spaced command'
+complete -c script -A -n '__fish_seen_subcommand_from 'spaced command'' -l goodbye -d ''

tests/commands/completion/fixtures/zsh.txt

@@ -48,7 +48,7 @@ _my_function()
             ;;
 
             ('spaced command')
-            opts+=()
+            opts+=("--goodbye")
             ;;
 
             esac