chore: (description) improve embeds for warnings

Refactored embed creation and sending in moderation warnings and owner cog management for consistency and improved user feedback. Added author and title fields to embeds, centralized embed sending logic, and enhanced error reporting with exception details. Moved NotOwner error handling from bot.py to cog_management.py for owner commands.

cogs/moderation/warnings.py

@@ -38,9 +38,11 @@ class Warnings(commands.Cog, name="warnings"):
         
         if context.invoked_subcommand is None:
             embed = discord.Embed(
+                title="Warning",
                 description="Please specify a subcommand.\n\n**Subcommands:**\n`add` - Add a warning to a user.\n`remove` - Remove a warning from a user.\n`list` - List all warnings of a user.",
                 color=0x7289DA,
             )
+            embed.set_author(name="Moderation", icon_url="https://yes.nighty.works/raw/8VLDcg.webp")
             await self.send_embed(context, embed)
 
     @warning.command(
@@ -92,6 +94,7 @@ class Warnings(commands.Cog, name="warnings"):
             await member.send(embed=dm_embed)
         except:
             fallback = discord.Embed(
+                title="Warning",
                 description=f"{member.mention}, you were warned by **{context.author}**!\nReason: {reason}",
                 color=0xE02B2B,
             )
@@ -127,6 +130,7 @@ class Warnings(commands.Cog, name="warnings"):
         )
         total = await self.bot.database.remove_warn(warn_id, user.id, context.guild.id)
         embed = discord.Embed(
+            title="Warning",
             description=f"I've removed the warning **#{warn_id}** from **{member}**!\nTotal warns for this user: {total}",
             color=0x7289DA,
         )