Add send parameter for commands

[LEv145]

Problem

There are some commands, the result of which can be sent only to a user (ephemeral), and not to a chat

Solution

Add the send parameter to commands, which will be true/false, it will determine whether to send a message privately to a user or in a chat to everyone

Examples

/rep user:@user Send a message privately to a user, server users will not see this message
/rep user:@user send:true Send a message to a server, server users will see this message