Introduced i18n for /event, /guess, /register and /unregister. Prepared other commands for i18n too

cogs/cog_stage.py

@@ -4,6 +4,7 @@ from bson.errors import InvalidId
 from discord import ApplicationContext, Attachment, SlashCommandGroup, option
 from discord.ext.commands import Cog
 from discord.utils import basic_autocomplete
+from libbot.i18n import in_every_locale, _
 
 from classes import PycordEvent, PycordEventStage, PycordGuild
 from classes.pycord_bot import PycordBot
@@ -21,7 +22,11 @@ class CogStage(Cog):
     def __init__(self, bot: PycordBot):
         self.bot: PycordBot = bot
 
-    command_group: SlashCommandGroup = SlashCommandGroup("stage", "Event stage management")
+    command_group: SlashCommandGroup = SlashCommandGroup(
+        "stage",
+        description=_("description", "commands", "stage"),
+        description_localizations=in_every_locale("description", "commands", "stage"),
+    )
 
     # TODO Introduce i18n
     # TODO Maybe add an option for order?