Feature: change bpm inside charter

[Knipppi]

Describe the feature you'd like to see

It is annoying to have to change the bpm from file, it would be wayy better if we could change it from the charter instead.

Additional context

No response

[SockHungryClutz]

Experimental build of the community-modded charter has this feature (under the "modifiers" row in the charter)
https://github.com/KirbyKid256/BBCharter/tree/experimental

[Knipppi]

it isn't. unless im looking at the wrong thing..