[cseq] Use custom drumfill midi for original rendered samples

[DCxDemo]

Some songs use a rendered drumfill sample instead of a midi pattern. Replace it with a custom made one.
Obvious candidates are hub and intro, but maybe there are more (probably crystal challenge, gotta check).

• create and include custom midi drum loop to the framework
• add code to detect tracks needed to patch (use sample hashes for detection)
• make it optional in gui (cseq tab menu)

Be aware of track length differences, gotta find some way to either loop a segment or cut beyond the original length