feature (sponsors): Add sponsor command.

Add new sponsor prompts.
Add new sponsor command.
Add `sponsor_text` table.
Add sponsor global config settings.
Update `Setting.command` to use new `widget`.
Add custom `cmd_str` support to `Message` `SettingType`.

bot/settings/base.py

@@ -201,13 +201,13 @@ class Setting:
         raise NotImplementedError
 
     @classmethod
-    async def command(cls, ctx, id):
+    async def command(cls, ctx, id, flags=()):
         """
         Standardised command viewing/setting interface for the setting.
         """
-        if not ctx.args:
+        if not ctx.args and not ctx.msg.attachments:
             # View config embed for provided cls
-            await ctx.reply(embed=cls.get(id).embed)
+            await cls.get(id).widget(ctx, flags=flags)
         else:
             # Check the write ward
             if cls.write_ward and not await cls.write_ward.run(ctx):

bot/settings/setting_types.py

@@ -713,6 +713,8 @@ class Message(SettingType):
     _substitution_desc = {
     }
 
+    _cmd_str = '{prefix} config {setting}'
+
     @classmethod
     def _data_from_value(cls, id, value, **kwargs):
         if value is None:
@@ -844,14 +846,16 @@ class Message(SettingType):
         embed.add_field(
             name="Setting Guide",
             value=(
-                "• For plain text without an embed, use `{prefix}config {setting} <text>`.\n"
+                "• For plain text without an embed, use `{cmd_str} <text>`.\n"
                 "• To include an embed, build the message [here]({builder}) "
-                "and upload the json code as a file with the `{prefix}config {setting}` command.\n"
-                "• To reset the message to the default, use `{prefix}config {setting} None`."
+                "and upload the json code as a file with the `{cmd_str}` command.\n"
+                "• To reset the message to the default, use `{cmd_str} None`."
+            ).format(
+                cmd_str=self._cmd_str,
+                builder="https://glitchii.github.io/embedbuilder/?editor=gui"
             ).format(
                 prefix=ctx.best_prefix,
                 setting=self.display_name,
-                builder="https://glitchii.github.io/embedbuilder/?editor=gui"
             ),
             inline=False
         )