Go Gaga for Gorgeous Graphics

This release adds support for Pico GFX Pack's RGB-backlit 128x64 monochrome LCD.

What's Changed

change default colour order by @helgibbons in #538
tweak micropython docs by @helgibbons in #539
Switched the Plasma Stick colour order and fixed BME280 example by @ZodiusInfuser in #540
Update Pico Unicorn readme by @helgibbons in #543
Add note about LED colour order by @helgibbons in #544
make function reference consistent by @helgibbons in #547
Added launch software for Galactic Unicorn, and improved other examples by @ZodiusInfuser in #550
More Galactic Unicorn Examples by @ZodiusInfuser in #552
Add time synchronization from NTP to GU clock example by @MichaelBell in #553
Added Galactic Unicorn function reference and example by @lowfatcode in #557
pull GU function reference by @helgibbons in #558
Tidy Galactic Unicorn docs by @helgibbons in #559
Driver/st7567 by @rabid-inventor in #561
Fix setting the LTP305 brightness by @MichaelBell in #555
Fix typo galactic_unicorn feature_test_with_audio.py by @johnmccabe in #565
GFX pack examples and docs tweaks by @helgibbons in #568
Badger2040: Make the LED example pulse instead of strobe by @ahpook in #577
Driver/st7567 by @rabid-inventor in #581

Full Changelog: v1.19.9...v1.19.10