Add ArduPID

[PowerBroker2]

No description provided.

[github-actions]

Arduino Lint has suggestions for possible improvements to https://github.com/PowerBroker2/ArduPID:

Linting library in ArduPID
WARNING: The library.properties paragraph field repeats the sentence field. These are displayed together so redundancy  
         is not needed. (Rule LP036)                                                                                    
WARNING: No example sketches found. Please provide examples. See:                                                       
         https://arduino.github.io/arduino-cli/latest/library-specification/#library-examples (Rule LD004)              

Linter results for project: 0 ERRORS, 2 WARNINGS

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[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/PowerBroker2/ArduPID/