Harp protocol functionality updates and maintenance

[glopesdev]

Resolve

• Refactor Version registers harp-tech/protocol#44
• Heterogenous register types in yaml schema harp-tech/protocol#40
• USB VID/PID Specs for devices that support Native USB harp-tech/protocol#29

Discuss

• Consider defining an upper command rate limit from interface to device harp-tech/protocol#42

[glopesdev]

Progress review

• Add support for generating mixed payload spec converters harp-tech/reflex-generator#87 (working prototype)
• USB VID/PID Specs for devices that support Native USB harp-tech/protocol#29 (comment) (discussed, requires coordination across core developers)
• Consider defining an upper command rate limit from interface to device harp-tech/protocol#42 (comment) (discussed)