[Feature Request] Bot Up Message in channel

### Is your feature request related to a problem? Please describe.

No

### What is your ideal solution to the problem?

There is not a problem

### How would this feature be used?

For when the bot boots it sends a message to a channel.

### Additional Info

_No response_

### Checklist

- [X] I have checked [the documentation](https://jmusicbot.com/) to make sure this feature doesn't already exist
- [X] I have searched for [similar feature requests](https://github.com/jagrosh/MusicBot/labels/enhancement)
- [X] I have confirmed that my requests is **not** on the [list of things that will not be added](https://jmusicbot.com/things-that-wont-be-added)
- [X] I am running the latest version of the bot: 

The issue names the bot boot event and a target channel but no files or tests; start by locating the bot's startup entry point and existing channel or configuration handling. Clarify how the channel is selected, what message is sent, and when it should appear, then verify the notification occurs on startup under the agreed configuration.

Written by the indexing model from the issue text.