Add LED pin aliases to Arduino Nano ESP32 for portability

[sebromero]

Description of Change

This PR adds aliases to control the RGB led on the Arduino Nano ESP32 board. On other Arduino boards those pins are named LEDR, LEDG, LEDB. To improve portability amoung the Arduino boards the Arduino Nano ESP32 should support those names.

Tests scenarios

Tested on Arduino Nano ESP32

[CLAassistant]

All committers have signed the CLA.

[github-actions]

Warnings

⚠️

Some issues found for the commit messages in this PR: the commit message "feat: Add pin aliases for RGB LED pins to ensure portability.": summary should not end with a period (full stop) Please fix these commit messages - here are some basic tips: follow Conventional Commits style correct format of commit message should be: <type/action>(<scope/component>): <summary>, for example fix(esp32): Fixed startup timeout issue allowed types are: change,ci,docs,feat,fix,refactor,remove,revert,test sufficiently descriptive message summary should be between 20 to 72 characters and start with upper case letter avoid Jira references in commit messages (unavailable/irrelevant for our customers) TIP: Install pre-commit hooks and run this check when committing (uses the Conventional Precommit Linter).

👋 Hello sebromero, we appreciate your contribution to this project!

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[sebromero]

@pillo79 Looks good?

[pillo79]

@pillo79 Looks good?

Please move the new labels to the end of the file, close to the LED_BUILTIN entry: the current place would create differences when choosing pin remapping options.
Otherwise LGTM, nice compatiblity fix 👍

[sebromero]

@pillo79 That makes sense 😅 Done.