Support StickC-Plus2

[letanphuc]

Support StickC-Plus2
https://docs.m5stack.com/en/core/M5StickC%20PLUS2
Anything works well for now.

Build with board name is m5stickc_plus2

[github-actions]

Hello @letanphuc, and thank you very much for your first pull request to the Zephyr project!
Our Continuous Integration pipeline will execute a series of checks on your Pull Request commit messages and code, and you are expected to address any failures by updating the PR. Please take a look at our commit message guidelines to find out how to format your commit messages, and at our contribution workflow to understand how to update your Pull Request. If you haven't already, please make sure to review the project's Contributor Expectations and update (by amending and force-pushing the commits) your pull request if necessary.
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[VynDragon]

Hello, Thank you.

For supply pin, do not modify the display driver since this is specific to this board, instead, add a CMakelists.txt and relevant code in your board's folder.

[letanphuc]

From my view point, the pin is belong to the display. If we do not use the display, I do not want to turn the pin on anyway.

[sonarqubecloud]

Please retry analysis of this Pull-Request directly on SonarQube Cloud

[bricle]

Hello, thank you for your work!
Here are something you need to address, maybe you need to squash your commits into a single one, and force push.
Besides, commit needs a Signed-Off-By so CI will fail