Add Max bot users per minute setting in Broadcast

We’ve added a new setting in the Broadcast feature that allows users to control the Max Bot Users per Minute.

This setting lets you specify the rate limit for broadcasting messages, ensuring messages are sent to a defined number of users per minute.

By adjusting this rate, you can manage the flow of broadcast messages to avoid overloading the system and maintain optimal performance.

Video Tutorial:
https://www.youtube.com/watch?v=lknKCcf5exQ