Add ESP32_Host_MIDI to repositories.txt

[sauloverissimo]

This commit adds the "ESP32_Host_MIDI" library to the Arduino Library Manager registry.

Repository URL: https://github.com/sauloverissimo/ESP32_Host_MIDI

Thank you for reviewing this submission! 😉

[github-actions]

Arduino Lint has suggestions for possible improvements to https://github.com/sauloverissimo/ESP32_Host_MIDI:

Linting library in ESP32_Host_MIDI

Linter results for project: no errors or warnings

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Linting sketch in ESP32_Host_MIDI/examples/T-Display-S3
WARNING: Sketch file/folder name mismatch. The primary sketch file name must match the folder: T-Display-S3.ino
         See: https://arduino.github.io/arduino-cli/latest/sketch-specification/#primary-sketch-file           
         (Rule SS001)                                                                                          

Linter results for project: 0 ERRORS, 1 WARNINGS

-------------------

Linter results for projects: 0 ERRORS, 1 WARNINGS

[github-actions]

Your submission has now been accepted! Thanks for your contribution to the Arduino Library Manager index.

The library(s) will be available for installation via Library Manager within a day's time.

You can check the logs from the Library Manager indexer for your library(s) here:
http://downloads.arduino.cc/libraries/logs/github.com/sauloverissimo/ESP32_Host_MIDI/