rewrite (wards): Add context-agnostic wards.

src/wards.py

@@ -1,10 +1,36 @@
+import discord
+
 from meta.LionContext import LionContext
+from meta import conf
 
 
-async def sys_admin(ctx: LionContext) -> bool:
+# Interaction Wards
+
+async def i_sys_admin(interaction: discord.Interaction) -> bool:
     """
     Checks whether the context author is listed in the configuration file as a bot admin.
     """
+    admins = conf.bot.getintlist('admins')
+    return interaction.user.id in admins
+
+
+async def i_high_management(interaction: discord.Interaction) -> bool:
+    if await i_sys_admin(interaction):
+        return True
+    if not interaction.guild:
+        return False
+    return interaction.user.guild_permissions.administrator
+
+
+async def i_low_management(interaction: discord.Interaction) -> bool:
+    if await i_high_management(interaction):
+        return True
+    if not interaction.guild:
+        return False
+    return interaction.user.guild_permissions.manage_guild
+
+
+async def sys_admin(ctx: LionContext) -> bool:
     admins = ctx.bot.config.bot.getintlist('admins')
     return ctx.author.id in admins