Update boards.txt with updated CodeCell board variant

[microbotsio]

Description of Change

This Pull Request adds support for a custom ESP32-C3-based board named "CodeCell C3". The changes include:

• A new entry in boards.txt under the identifier codecellc3
• Configuration for upload tools, flash size, partition schemes, JTAG settings, and other board-specific options
• Custom build.board=CODECELLC3 identifier

This allows users to select the "CodeCell C3" board from the Arduino IDE and build/upload sketches using the ESP32 Arduino core.

Tests scenarios

Tested on custom CodeCell C3 hardware using the following setup:

• Arduino IDE 2.3.5
• Verified detection and upload via USB CDC

Related links

N/A

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
1 out of 2 committers have signed the CLA.

✅ microbotsio
❌ CarlBugeja
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[github-actions]

Warnings

⚠️

Some issues found for the commit messages in this PR: the commit message "Update boards.txt": summary looks empty type/action looks empty the commit message "Update boards.txt": summary looks empty type/action looks empty the commit message "Update boards.txt": summary looks empty type/action looks empty the commit message "Update boards.txt": 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).

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

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Generated by 🚫 dangerJS against a091c33

[microbotsio]

Is there anything further we need to address?

[me-no-dev]

@microbotsio you need to sign the CLA

[microbotsio]

@microbotsio you need to sign the CLA

CLA was signed but it still shown as pending

[me-no-dev]

@microbotsio seems to be an issue with @CarlBugeja account

[CarlBugeja]

@microbotsio seems to be an issue with @CarlBugeja account

signed

[me-no-dev]

signed

@CarlBugeja still shows unsigned... strange