v0.6.1

Recipe TinyUSB pins follow the merge of PR #3738 (Function Blocks derived
from the GTB descriptor) into TinyUSB upstream on 2026-07-05. Device and
bridge recipes that tracked the fix/midi2-fb-direction PR branch now pull
hathach/tinyusb at the merge commit; the fork is no longer required for
them.

Changed

• Examples: 16 recipes moved from the sauloverissimo/tinyusb
fix/midi2-fb-direction branch to hathach/tinyusb at the PR #3738
  merge commit.
• Examples: adafruit-feather-rp2040-host-midi2 advanced its upstream pin
  from the PR #3571 merge commit to the PR #3738 merge commit.
• Examples: TinyUSB FetchContent recipes set GIT_SHALLOW FALSE, since an
  exact upstream commit (unlike a branch) is not reliably shallow-fetchable.
• Examples: the 3 ESP32-P4 coexistence recipes
  (esp32-p4-devkit-host-midi2, esp32-p4-devkit-bridge-midi2,
  esp32-p4-devkit-bridge2-midi2) stay on the experiment/midi-coexistence
  fork branch, staged as a follow-up PR upstream.
• Docs: recipe comments and READMEs now describe TinyUSB as upstream
  (PR #3738, merged) rather than the PR branch.