Checkboxes system for channels

[MolotoveDev]

I’ve been using Rocket.Chat for the past couple of days, and I noticed a small UX improvement that could make channel management much more convenient.

At the moment, when deleting multiple text channels, there doesn’t seem to be a way to select several channels at once (for example, using checkboxes) and delete them in a single action. Instead, each channel has to be selected and deleted individually.

It could be useful to add a bulk selection feature for administrative actions like deleting or modifying multiple channels at once. This would save time and make large-scale management tasks much more efficient.