robot: add permission level for selfbots

Fixes #95.

Author: zephyrtronium

config.go

@@ -309,6 +309,8 @@ func (robo *Robot) SetTwitchChannels(ctx context.Context, global Global, channel
 					DisableSpeak:    true,
 					DisableMemes:    true,
 				}
+			case strings.EqualFold(p.Level, "selfbot"):
+				perms[p.ID] = channel.UserPerms{DisableLearn: true}
 			case strings.EqualFold(p.Level, "moderator"):
 				perms[p.ID] = channel.UserPerms{Moderator: true}
 			}
@@ -322,6 +324,8 @@ func (robo *Robot) SetTwitchChannels(ctx context.Context, global Global, channel
 					DisableSpeak:    true,
 					DisableMemes:    true,
 				}
+			case strings.EqualFold(p.Level, "selfbot"):
+				perms[p.ID] = channel.UserPerms{DisableLearn: true}
 			case strings.EqualFold(p.Level, "moderator"):
 				perms[p.ID] = channel.UserPerms{Moderator: true}
 			}

example.toml

@@ -127,8 +127,9 @@ meme = '^\S*$'
 # Access levels for users.
 # Each entry must have a name or ID and a level. If both a name and ID are
 # given, the name is ignored.
-# The valid levels are 'ignore' to disable use of all commands, including
-# prompting, or 'moderator' to add use of moderation commands.
+# The valid levels are 'ignore' to disable learning and use of all commands,
+# including prompting; 'selfbot' to disable learning but still allow commmands;
+# or 'moderator' to add use of moderation commands.
 # Note that on Twitch, the broadcaster and channel moderators always have
 # moderator privileges.
 # Unlike most strings, these are not expanded with environment variables.