[Feature request] open/test bms feature

[Vad1mCSO2]

Tested LR2 to preview and play from files or trough editor. Usage:

'lunaticvibes [filename]' - open bms to play mode (manual)
'lunaticvibes -A [filename]' - open bms to autoplay mode

Current behavior: opening bms from file it crashed.

@m8nscape thanks for modern bms player project!