admin extension with update and restart command

bot/extensions/admin.py

@@ -0,0 +1,37 @@
+import asyncio
+import os
+
+import discord
+from discord.commands import SlashCommandGroup
+
+from libs import Client
+
+
+class Admin(discord.Cog):
+    """< discord.Cog >
+
+    Some developer tools for managing the bot.
+    """
+
+    def __init__(self, bot: Client):
+        self.bot = bot
+
+    __dev_group = SlashCommandGroup(name='dev', description='Developer settings')
+
+    @__dev_group.command(name='update')
+    async def __update_bot(self, ctx: discord.ApplicationContext) -> None:
+        await ctx.respond('starting update...')
+
+        if 0 == await self.bot.execute_shell('update.sh'):
+            await ctx.respond('Updated bot from https://github.com/Specoolazius/mcserver-discordbot\n'
+                              'You may need to restart the bot')
+
+        else:
+            await ctx.respond(f'Failed to update bot. Check {os.path.join(self.bot.config.log_path, "discord.log")} '
+                              f'for more detailed information')
+
+    @__dev_group.command(name='restart')
+    async def __restart_service(self, ctx: discord.ApplicationContext) -> None:
+        await ctx.respond('attempting restart...')
+        await asyncio.create_subprocess_shell(f'sudo systemctl restart')
+