Add initial code

src/core/messages.py

@@ -0,0 +1,18 @@
+import discord
+
+from core.commands import dispatch_command
+
+async def handle_message(bot: discord.Client, config: dict, message: discord.Message):
+    """
+    Handle messages received from Discord
+    """
+    if message.author == bot.user:
+        # Ignore messages from the bot!
+        return
+
+    # Ping!
+    if message.content == "ping":
+        await message.reply("pong!")
+
+    if message.content[0] == config.get("command_prefix"):
+        await dispatch_command(bot, config, message)