bebob: add ProjectMix/NRV10 and changing clock source, digital interface support

ProjectMix and Firewire1814 is similar. They have some common commands.

Instead of them, NRV10 is similar to Firewire 410/Firewire Audiophile/Firewire
Solo/Ozonic.

All of them has metering but its structure is unknown. The length for ProjectMix
is 84. This is the same as Firewire 1814. The length for NRV10 is unknown. I
code for them with my assumption. Need someone to investigate.