Event evaluation

[melody-rs]

Is your feature request related to a problem? Please describe.
RPG Maker lacks proper tooling to debug events. This would be an amazing feature to have, even if it would be heavily restricted (i.e. no script event commands, no custom event commands, etc)

Describe the solution you'd like
Allow Luminol to scan over commands and process them. Known commands are evaluated, but unknown commands or commands that Luminol can't process (i.e. script commands) are unprocessed and a warning is shown.
Luminol provides typical debug tools, such as stepping over individual lines or breaking at a certain point. This could also integrated nicely with #32.

Describe alternatives you've considered
Fading Memory has a partial event command debugger implemented in RGSS. The implementation is botched and hard to use. Luminol could provide an RGSS based debugger, but it likely wouldn't play nice with complex custom scripts.