[Suggestion] display variable values written by the timeline

[Cub0use]

In Bedrock animation, it would be nice to see the returned value of variable placeholders somewhere when it gets updated by pre_effect_script in the timeline, or when written in the variable placeholder tab (which would be useful when molang is used).

Some form of "read-only" tab where every variable present in Variable Placeholder + in the current animation's Pre_effect_script would be displayed.