Add lv_arclabel.c to LVGL Zephyr build

[YehudaEi]

This patch updates the modules/lvgl/CMakeLists.txt to include the lv_arclabel.c source file in the Zephyr build.

Without this change, the arclabel widget from LVGL was not compiled into Zephyr projects, making it unavailable for use. Adding this file ensures that arclabel functionality is included and usable.

Change:

• Added ${LVGL_DIR}/src/widgets/arclabel/lv_arclabel.c to zephyr_library_sources.

[github-actions]

Hello @YehudaEi, and thank you very much for your first pull request to the Zephyr project!
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[faxe1008]

Saw this also while prepping for the 9.4 release but have not gotten around to it. Thank you for your PR. But the commit message needs adjusting. Use module instead of driver.

[YehudaEi]

But the commit message needs adjusting. Use module instead of driver.

@faxe1008 Fixed.

[JarmouniA]

Commit sign-off needs adjusting as well, Zephyr requires full legal name
https://docs.zephyrproject.org/latest/contribute/guidelines.html#dco-sign-off

[YehudaEi]

Commit sign-off needs adjusting as well, Zephyr requires full legal name

@JarmouniA Fixed.

[JarmouniA]

Compliance issue
commit author name (Yehuda E) needs to match one of the signed-off-by entries.

[YehudaEi]

@JarmouniA Fixed.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

Hi @YehudaEi!
Congratulations on getting your very first Zephyr pull request merged 🎉🥳. This is a fantastic achievement, and we're thrilled to have you as part of our community!

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Thank you for your valuable input, and we look forward to seeing more of your contributions in the future! 🪁