MIDI 2.0 support

[Trinitou]

prerequisites

• compile firmware for the current board
• programmer
• have a reference USB 2.0 device available to see how the descriptors look there

goals

• adjust the USB descriptors in the firmware code so that the MIDI bridge is detected as MIDI 2.0 capable device
• extend the code so that the MIDI Bridge forwards ump events correctly
• should MIDI 2.0 also work if only a MIDI 1.0 is connected? probably the descriptors need to adjust dynamically then (?)

implementation hints

• https://midi2-dev.github.io/usbMIDI2DescriptorBuilder/
• alsa is already capable of handling midi 2.0 events
• on windows, usb treeviewer is a useful tool