Add etienne-lms as project contributor

[erwango]

Nomination

GitHub User

Provide the following information about the GitHub user:

1. Full Name: Etienne Carriere
2. GitHub username: etienne-lms
3. Organization: STMicroelectronics

Supporting Documents

#84829
#86771
https://github.com/zephyrproject-rtos/zephyr/pulls?q=+is%3Apr+reviewed-by%3Aetienne-lms+

[nashif]

Thank you for your contribution to the Zephyr project.

An invite was sent to you to join the project. You can find the invite here: https://github.com/zephyrproject-rtos/zephyr/invitations.

Note that further access and permissoins to the project will be provided following the project guidelines.