feat: Add support for Launchpad MK1 (MIDI 1.0)

[sapphicdisaster]

kia ora (hello)!
this pr adds support for the original Novation Launchpad (MK1), which uses the MIDI 1.0 protocol. I've tested extensively with my own mk1 with some optional value adds - including debug, mapping, and possible ability for canvas integration.

Overview:
The core of this change is the introduction of the launchpad_midi_1 module.
This module completely addresses the specific input and output logic required for the Launchpad MK1. Note that it's MIDI interface is markedly slower than the newer launchpads so it can't handle fast commands or pwn, and I added some debug functionality too.

Here's a summary of the key changes:

• src/launchpad_midi_1/: New directory containing the imple mentation for theLaunchpad MK1.
  * input.rs: Handles MIDI input from the device, translating MIDI messages into launchy's internal message format.
  * output.rs: Handles MIDI output to the device, allowing for button LEDs to be controlled.
  * mod.rs: Defines the launchpad_midi_1 module and its components.
  * README.md: Provides a brief overview of the module.
• src/lib.rs:
  * The launchpad_midi_1 module is now publicly exported as midi1, making it accessible to users of the library.
• src/midi_io.rs:
  * Added log::debug statements to assist with debugging MIDI device discovery and connection issues.
• src/protocols/mod.rs:
  * Added is_main_grid_button, is_top_control_button, and is_scene_launch_button helper methods to the Button80 enum to provide more convenient button classification. NOTE this is optional but i found it useful to avoid confusion with mapping.
• README.md:
  * Updated the "Supported devices" section to include the Launchpad (MK1).

[kangalio]

Thanks a lot for your work!

[kangalio]

Thanks! When I do a quick check locally, it fails:

Are you sure you set up the dependencies correctly? Or is this an issue on my end?

[sapphicdisaster]

Ah, I hadn't committed the changed cargo requirements bc i wasn't certain if you wanted to merge in my debug statements or leave them out of the commit, I'll unstash it!

[sapphicdisaster]

if its helpful i can also do a pr for an example with the mk1, i made a few demos to test it (tetris visualiser?)