Create simple help command for setting up.

cogs/commands/help.py

@@ -0,0 +1,47 @@
+"""
+Commands for helping a user.
+"""
+
+import nextcord
+from nextcord.ext import commands
+
+
+class HelpCog(commands.Cog, name="Help commands."):
+    """
+    Class holds commands for getting help.
+    """
+
+    def __init__(self) -> None:
+        """
+        Default constructor for HelpCog class. Does nothing.
+        """
+
+    @nextcord.slash_command()
+    async def help(self, interaction: nextcord.Interaction):
+        """
+        Parent slash command for help. Never called.
+        """
+
+    @help.subcommand(description="Describes how to get started with Agon.")
+    async def setup(self, interaction: nextcord.Interaction):
+        """
+        Sends a message describing how to get started with Agon.
+
+        Args:
+            interaction (nextcord.Interaction): Interaction that invoked the command.
+        """
+
+        # I hate this but don't want indents in the string.
+        # pylint: disable=line-too-long
+        help_str: str = """Welcome to Agon! Three simple steps are needed to get started.
+1.) Set a channel to recieve submission verifications with "/set verify_channel."
+This channel is used to allow moderators to check if a submission is real/valid.
+
+2.) Set a channel for submissions to be posted in with "/set submission_channel."
+This channel will be where all user submission messages are sent.
+
+3.) Set up your highscore tables! Use "/create group" to first create a group message in the channel you would like and then use "/create category" to create a category in that group message!"""
+        # pylint: enable=line-too-long
+        print(help_str)
+
+        await interaction.response.send_message(content=help_str)