feat(board): add support for Waveshare ESP32-C3-Zero

[DrayxR3X]

Description of Change

This pull request adds support for the Waveshare ESP32-C3-Zero board to the Arduino-ESP32 core.

Changes include:

1.Added board entry in boards.txt
2.Created variants/waveshare_esp32_c3_zero with pin mapping

Test Scenarios

I have tested the following scenarios to verify the board support:

1.Verified compilation and upload with Arduino IDE 2.3.4 and Espressif Arduino-ESP32 v3.3.3
2.Tested basic examples successfully on the Waveshare ESP32-C3-Zero board

The following examples were compiled, uploaded, and executed successfully:

1.Blink (WS2812 LED with digitalWrite)
2.Blink RGB (WS2812 / RGB LED with rgbLedWrite)
3.Serial CDC (USB communication)
4.WiFi (WiFiClient example)

[github-actions]

Warnings

⚠️

Some issues found for the commit messages in this PR: the commit message "Change the board name back to Waveshare ESP32-C3-Zero to align with Waveshare’s unified product naming convention.": summary should not end with a period (full stop) summary looks empty type/action looks empty the commit message "Modify the boards.txt file according to the review": summary looks empty type/action looks empty 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 10 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).

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[P-R-O-C-H-Y]

Hi @DrayxR3X, please move the Waveshare C3 ZERO next to the Waveshare C6 Zero in the boards.txt file. Will be much better. PR looks good otherwise